CVE-2022-48636

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-48636", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-25T13:44:28.315Z", "datePublished": "2024-04-28T12:59:28.858Z", "dateUpdated": "2026-08-05T08:51:35.257Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:51:35.257Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\n\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\npointer being NULL.\n\nThe pavgroup pointer is checked on the entrance of the function but\nwithout the lcu->lock being held. Therefore there is a race window\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\npavgroup to NULL with the lcu->lock held.\n\nFix by checking the pavgroup pointer with lcu->lock held."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is local DASD block I/O (do_dasd_request \u2192 dasd_eckd_build_alias_cp \u2192 dasd_alias_get_start_dev) on s390 PAV devices, reached via ordinary filesystem or block access; it is not network- or physically triggered.\nAC:L - An attacker can continuously generate DASD I/O on one side of the race; per guidance to prefer higher severity when uncertain, and because UAF races are AC:L unless clearly attacker-uncontrollable, complexity is Low.\nPR:L - Any unprivileged local user whose I/O hits a DASD-backed filesystem or accessible DASD block device reaches build_alias_cp without CAP_SYS_ADMIN; format ioctls need admin but the normal I/O path does not.\nUI:N - The attacker triggers the path with their own reads/writes; no separate victim action (mount, open crafted file, or admin reconfiguration) is required.\nS:U - Impact is confined to the host kernel\u2019s DASD/alias state within the same OS security authority; this is not a VM escape, IOMMU bypass, or other cross-boundary compromise.\nC:H - Concurrent _lcu_update() kfree()s the alias_pav_group while get_start_dev holds a stale pointer, yielding a heap UAF whose reclaim can disclose kernel memory via controlled freed-object contents.\nI:H - The same UAF both reads and writes group->next on freed memory and may return a attacker-influenced dasd_device used for CCW construction, enabling heap corruption and control-flow impact under standard UAF exploitation.\nA:H - Dereferencing the freed pavgroup causes a kernel Oops/panic in dasd_alias_get_start_dev, which is Availability High under kernel CVSS guidance."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/block/dasd_alias.c"], "versions": [{"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "d86b4267834e6d4af62e3073e48166e349ab1b70", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "49f401a98b318761ca2e15d4c7869a20043fbed4", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "aaba5ff2742043705bc4c02fd0b2b246e2e16da1", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "2e473351400e3dd66f0b71eddcef82ee45a584c1", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "d3a67c21b18f33c79382084af556557c442f12a6", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "650a2e79d176db753654d3dde88e53a2033036ac", "status": "affected", "versionType": "git"}, {"version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "db7ba07108a48c0f95b74fabbfd5d63e924f992d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/block/dasd_alias.c"], "versions": [{"version": "2.6.25", "status": "affected"}, {"version": "0", "lessThan": "2.6.25", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.330", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.295", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.260", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.215", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.146", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.71", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.12", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "4.9.330"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "4.14.295"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "4.19.260"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.4.215"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.10.146"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.15.71"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70"}, {"url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4"}, {"url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1"}, {"url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1"}, {"url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b"}, {"url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6"}, {"url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac"}, {"url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d"}], "title": "s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-06-07T17:07:44.029910Z", "id": "CVE-2022-48636", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-29T16:01:41.917Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:17:55.505Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:17:55.505Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2022-48636", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-07T17:07:44.029910Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-07T17:07:50.499Z"}}], "cna": {"title": "s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is local DASD block I/O (do_dasd_request \u2192 dasd_eckd_build_alias_cp \u2192 dasd_alias_get_start_dev) on s390 PAV devices, reached via ordinary filesystem or block access; it is not network- or physically triggered.\nAC:L - An attacker can continuously generate DASD I/O on one side of the race; per guidance to prefer higher severity when uncertain, and because UAF races are AC:L unless clearly attacker-uncontrollable, complexity is Low.\nPR:L - Any unprivileged local user whose I/O hits a DASD-backed filesystem or accessible DASD block device reaches build_alias_cp without CAP_SYS_ADMIN; format ioctls need admin but the normal I/O path does not.\nUI:N - The attacker triggers the path with their own reads/writes; no separate victim action (mount, open crafted file, or admin reconfiguration) is required.\nS:U - Impact is confined to the host kernel\u2019s DASD/alias state within the same OS security authority; this is not a VM escape, IOMMU bypass, or other cross-boundary compromise.\nC:H - Concurrent _lcu_update() kfree()s the alias_pav_group while get_start_dev holds a stale pointer, yielding a heap UAF whose reclaim can disclose kernel memory via controlled freed-object contents.\nI:H - The same UAF both reads and writes group->next on freed memory and may return a attacker-influenced dasd_device used for CCW construction, enabling heap corruption and control-flow impact under standard UAF exploitation.\nA:H - Dereferencing the freed pavgroup causes a kernel Oops/panic in dasd_alias_get_start_dev, which is Availability High under kernel CVSS guidance."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "d86b4267834e6d4af62e3073e48166e349ab1b70", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "49f401a98b318761ca2e15d4c7869a20043fbed4", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "aaba5ff2742043705bc4c02fd0b2b246e2e16da1", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "2e473351400e3dd66f0b71eddcef82ee45a584c1", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "d3a67c21b18f33c79382084af556557c442f12a6", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "650a2e79d176db753654d3dde88e53a2033036ac", "versionType": "git"}, {"status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "lessThan": "db7ba07108a48c0f95b74fabbfd5d63e924f992d", "versionType": "git"}], "programFiles": ["drivers/s390/block/dasd_alias.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.25", "versionType": "semver"}, {"status": "unaffected", "version": "4.9.330", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.295", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.260", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.215", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.146", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.71", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.19.12", "versionType": "semver", "lessThanOrEqual": "5.19.*"}, {"status": "unaffected", "version": "6.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/s390/block/dasd_alias.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70"}, {"url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4"}, {"url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1"}, {"url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1"}, {"url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b"}, {"url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6"}, {"url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac"}, {"url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\n\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\npointer being NULL.\n\nThe pavgroup pointer is checked on the entrance of the function but\nwithout the lcu->lock being held. Therefore there is a race window\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\npavgroup to NULL with the lcu->lock held.\n\nFix by checking the pavgroup pointer with lcu->lock held."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.330", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.295", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.260", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.215", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.146", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.71", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.19.12", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.0", "versionStartIncluding": "2.6.25"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:51:35.257Z"}}}, "cveMetadata": {"cveId": "CVE-2022-48636", "state": "PUBLISHED", "dateUpdated": "2026-08-05T08:51:35.257Z", "dateReserved": "2024-02-25T13:44:28.315Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-28T12:59:28.858Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/s390/block/dasd_alias.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d86b4267834e6d4af62e3073e48166e349ab1b70", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "49f401a98b318761ca2e15d4c7869a20043fbed4", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "aaba5ff2742043705bc4c02fd0b2b246e2e16da1", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "2e473351400e3dd66f0b71eddcef82ee45a584c1", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "d3a67c21b18f33c79382084af556557c442f12a6", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "650a2e79d176db753654d3dde88e53a2033036ac", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}, {"lessThan": "db7ba07108a48c0f95b74fabbfd5d63e924f992d", "status": "affected", "version": "8e09f21574ea3028d5629e5de759e0b196c690c5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/s390/block/dasd_alias.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"lessThan": "2.6.25", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.330", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.295", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.260", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.215", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.146", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.71", "versionType": "semver"}, {"lessThanOrEqual": "5.19.*", "status": "unaffected", "version": "5.19.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "271EBEC6-1BAE-49E0-8277-A38BB3441A48", "versionEndExcluding": "4.9.330", "versionStartIncluding": "2.6.25", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E1EEFD21-64A9-49E5-BE6C-53761F46346C", "versionEndExcluding": "4.14.295", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "64E35573-7CA4-4480-9B5B-E71B652A966F", "versionEndExcluding": "4.19.260", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B15615EA-D0B2-4F05-879B-7FF9B900DA1E", "versionEndExcluding": "5.4.215", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A9C1CF48-9C3A-4236-8546-BD32D742BFB7", "versionEndExcluding": "5.10.146", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "080C1827-D257-4D5A-9071-779EF7F5EF0B", "versionEndExcluding": "5.15.71", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "03B0F56B-C5CC-4E81-BB51-D07D569DE4CA", "versionEndExcluding": "5.19.12", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "E8BD11A3-8643-49B6-BADE-5029A0117325", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "5F0AD220-F6A9-4012-8636-155F1B841FAD", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "A46498B3-78E1-4623-AAE1-94D29A42BE4E", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "F8446E87-F5F6-41CA-8201-BAE0F0CA6DD9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "8E5FB72F-67CE-43CC-83FE-541604D98182", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "3A0A7397-F5F8-4753-82DC-9A11288E696D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\n\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\npointer being NULL.\n\nThe pavgroup pointer is checked on the entrance of the function but\nwithout the lcu->lock being held. Therefore there is a race window\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\npavgroup to NULL with the lcu->lock held.\n\nFix by checking the pavgroup pointer with lcu->lock held."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: s390/dasd: corrige Ups en dasd_alias_get_start_dev debido a la falta de pavgroup. Corrige Ups en la funci\u00f3n dasd_alias_get_start_dev() causada porque el puntero pavgroup es NULL. El puntero pavgroup se verifica en la entrada de la funci\u00f3n pero sin que se mantenga presionado el bloqueo lcu->. Por lo tanto, existe una ventana de ejecuci\u00f3n entre dasd_alias_get_start_dev() y _lcu_update() que establece pavgroup en NULL con el bloqueo lcu->retenido. Para solucionarlo, compruebe el puntero de pavgroup con lcu->lock retenido."}], "id": "CVE-2022-48636", "lastModified": "2026-08-04T10:17:13.843", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48636", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-07T17:07:44.029910Z", "version": "2.0.3"}}]}, "published": "2024-04-28T13:15:06.710", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup", "id": "2277833", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2277833"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\npointer being NULL.\nThe pavgroup pointer is checked on the entrance of the function but\nwithout the lcu->lock being held. Therefore there is a race window\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\npavgroup to NULL with the lcu->lock held.\nFix by checking the pavgroup pointer with lcu->lock held."], "name": "CVE-2022-48636", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48636\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48636\nhttps://lore.kernel.org/linux-cve-announce/2024042855-CVE-2022-48636-52a7@gregkh/T"], "statement": "No Red Hat products are affected by this vulnerability.", "threat_severity": "Moderate"}

{}