CVE-2022-49084

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49084", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.248Z", "datePublished": "2025-02-26T01:54:43.099Z", "dateUpdated": "2026-08-05T08:53:47.633Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:47.633Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - qede is the QLogic/Marvell FastLinQ Ethernet NIC RX path (qede_msix_fp_int \u2192 NAPI qede_poll \u2192 qede_rx_int \u2192 qede_rx_process_cqe \u2192 qede_rx_build_skb \u2192 qede_build_skb), reached when frames arrive on internet-facing servers and cloud VFs; a remote peer triggers it by sending packets.\nAC:L - build_skb() uses GFP_ATOMIC and fails under atomic allocation pressure that a sustained packet flood readily creates, and frames larger than the 256-byte rx_copybreak (or TPA/GRO) deterministically take the vulnerable path; the attacker drives both reachability and the failure condition.\nPR:N - NIC receive and NAPI softirq processing run on every inbound frame with no authentication, capability check, or local account required.\nUI:N - Reception and NAPI polling proceed automatically whenever the qede interface is up; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The NULL dereference and resulting oops remain inside the host kernel that owns the qede driver; no VM escape, IOMMU bypass, or other cross-authority boundary is crossed.\nC:N - skb_reserve() on a NULL skb is a pure NULL pointer dereference of fixed struct offsets below mmap_min_addr with no OOB read, UAF reclaim, or other disclosure primitive.\nI:N - The fault stores through a NULL skb pointer and aborts immediately without modifying attacker-influenced kernel objects, so there is no write primitive or control-flow hijack.\nA:H - The NULL dereference in skb_reserve() causes a kernel oops/panic in softirq/NAPI context, which is a full availability impact 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/net/ethernet/qlogic/qede/qede_fp.c"], "versions": [{"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "9648adb1b3ece55c657d3a4f52bfee663b710dfe", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "034a92c6a81048128fc7b18d278d52438a13902a", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "8928239e5e2e460d95b8a0b89f61671625e7ece0", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "c9bdce2359b5f4986eb38d1e81865b3586cc20d2", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "b2d6b3db9d1cf80908964036dbe1c52a86b1afb1", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "e1fd0c42acfa22bb34d2ab6a111484f466ab8093", "status": "affected", "versionType": "git"}, {"version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "lessThan": "4e910dbe36508654a896d5735b318c0b88172570", "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/net/ethernet/qlogic/qede/qede_fp.c"], "versions": [{"version": "4.18", "status": "affected"}, {"version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.238", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.189", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.111", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.34", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.20", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.3", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18", "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": "4.18", "versionEndExcluding": "4.19.238"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.4.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.10.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.15.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.16.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe"}, {"url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a"}, {"url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0"}, {"url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2"}, {"url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1"}, {"url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093"}, {"url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570"}], "title": "qede: confirm skb is allocated before using", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/qlogic/qede/qede_fp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9648adb1b3ece55c657d3a4f52bfee663b710dfe", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "034a92c6a81048128fc7b18d278d52438a13902a", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "8928239e5e2e460d95b8a0b89f61671625e7ece0", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "c9bdce2359b5f4986eb38d1e81865b3586cc20d2", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "b2d6b3db9d1cf80908964036dbe1c52a86b1afb1", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "e1fd0c42acfa22bb34d2ab6a111484f466ab8093", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}, {"lessThan": "4e910dbe36508654a896d5735b318c0b88172570", "status": "affected", "version": "8a8633978b842c88fbcfe00d4e5dde96048f630e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/qlogic/qede/qede_fp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.18"}, {"lessThan": "4.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.238", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.189", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.111", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.34", "versionType": "semver"}, {"lessThanOrEqual": "5.16.*", "status": "unaffected", "version": "5.16.20", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "767A1BFF-2D40-4BAB-945E-ACD1183BC6C9", "versionEndExcluding": "4.19.238", "versionStartIncluding": "4.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CB6E8F5-C2B1-46F3-A807-0F6104AC340F", "versionEndExcluding": "5.4.189", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "96258501-7BCE-4C55-8A38-8AC9D327626D", "versionEndExcluding": "5.10.111", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D25878D3-7761-4E9F-8919-E92CD53896E0", "versionEndExcluding": "5.15.34", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ABBBA66E-0244-4621-966B-9790AF1EEB00", "versionEndExcluding": "5.16.20", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AE420AC7-1E59-4398-B84F-71F4B4337762", "versionEndExcluding": "5.17.3", "versionStartIncluding": "5.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*", "matchCriteriaId": "6AD94161-84BB-42E6-9882-4FC0C42E9FC1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqede: confirm skb is allocated before using\n\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\n\nAdd a check in case build_skb() failed to allocate and return NULL.\n\nThe NULL return is handled correctly in callers to qede_build_skb()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: qede: confirmar que skb est\u00e1 asignado antes de usar qede_build_skb() supone que build_skb() siempre funciona y pasa directamente a skb_reserve(). Sin embargo, build_skb() puede fallar bajo presi\u00f3n de memoria. Esto da como resultado un p\u00e1nico del kernel porque el skb a reservar es NULL. Agregue una verificaci\u00f3n en caso de que build_skb() no pueda asignar y devuelva NULL. El retorno NULL se maneja correctamente en los llamadores a qede_build_skb()."}], "id": "CVE-2022-49084", "lastModified": "2026-08-04T10:17:33.797", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:00:45.737", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9648adb1b3ece55c657d3a4f52bfee663b710dfe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: qede: confirm skb is allocated before using", "id": "2347687", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347687"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nqede: confirm skb is allocated before using\nqede_build_skb() assumes build_skb() always works and goes straight\nto skb_reserve(). However, build_skb() can fail under memory pressure.\nThis results in a kernel panic because the skb to reserve is NULL.\nAdd a check in case build_skb() failed to allocate and return NULL.\nThe NULL return is handled correctly in callers to qede_build_skb()."], "name": "CVE-2022-49084", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49084\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49084\nhttps://lore.kernel.org/linux-cve-announce/2025022657-CVE-2022-49084-b132@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:16:12.823713+00:00", "updated": "2025-07-12T22:16:12.823785+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}