CVE-2024-26775

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And aoeblk_gdalloc()\nis trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(&d->lock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()\noutside."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/aoe/aoeblk.c"], "versions": [{"version": "a782483cc1f875355690625d8253a232f2581418", "lessThan": "2499fa286fb010ceb289950050199f33c26667b9", "status": "affected", "versionType": "git"}, {"version": "a782483cc1f875355690625d8253a232f2581418", "lessThan": "2d623c94fbba3554f4446ba6f3c764994e8b0d26", "status": "affected", "versionType": "git"}, {"version": "a782483cc1f875355690625d8253a232f2581418", "lessThan": "673629018ba04906899dcb631beec34d871f709c", "status": "affected", "versionType": "git"}, {"version": "a782483cc1f875355690625d8253a232f2581418", "lessThan": "19a77b27163820f793b4d022979ffdca8f659b77", "status": "affected", "versionType": "git"}, {"version": "a782483cc1f875355690625d8253a232f2581418", "lessThan": "e169bd4fb2b36c4b2bee63c35c740c85daeb2e86", "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/block/aoe/aoeblk.c"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.189", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "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": "5.11", "versionEndExcluding": "5.15.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.7.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2499fa286fb010ceb289950050199f33c26667b9"}, {"url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26"}, {"url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c"}, {"url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77"}, {"url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86"}], "title": "aoe: avoid potential deadlock at set_capacity", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.394Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26775", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:51:17.891108Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:55.155Z"}}]}}

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And aoeblk_gdalloc()\nis trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(&d->lock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()\noutside."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.189", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.80", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.19", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.7", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "5.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:03:56.208Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26775", "state": "PUBLISHED", "dateUpdated": "2026-05-11T20:03:56.208Z", "dateReserved": "2024-02-19T14:20:24.176Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-03T17:01:01.299Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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And aoeblk_gdalloc()\nis trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(&d->lock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()\noutside."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: aoe: evita un posible punto muerto en set_capacity Mueve set_capacity() fuera de la secci\u00f3n procesada por (&amp;d-&gt;lock). Para evitar una posible interrupci\u00f3n en un escenario de bloqueo inseguro: CPU0 CPU1 ---- ---- [1] lock(&amp;bdev-&gt;bd_size_lock); local_irq_disable(); [2] bloquear(&amp;d-&gt;bloquear); [3] bloquear(&amp;bdev-&gt;bd_size_lock); [4] bloqueo(&amp;d-&gt;bloqueo); *** DEADLOCK *** Donde [1](&amp;bdev-&gt;bd_size_lock) mantenido por zram_add()-&gt;set_capacity(). [2]bloqueo(&amp;d-&gt;bloqueo) retenido por aoeblk_gdalloc(). Y aoeblk_gdalloc() est\u00e1 intentando adquirir [3](&amp;bdev-&gt;bd_size_lock) en la llamada set_capacity(). En esta situaci\u00f3n, un intento de adquirir [4]lock(&amp;d-&gt;lock) de aoecmd_cfg_rsp() provocar\u00e1 un punto muerto. Entonces, la soluci\u00f3n m\u00e1s simple es romper la dependencia del bloqueo [2](&amp;d-&gt;lock) -&gt; [3](&amp;bdev-&gt;bd_size_lock) moviendo set_capacity() afuera."}], "id": "CVE-2024-26775", "lastModified": "2026-06-17T07:18:18.850", "metrics": {"cvssMetricV31": [{"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26775", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:51:17.891108Z", "version": "2.0.3"}}]}, "published": "2024-04-03T17:15:53.187", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2499fa286fb010ceb289950050199f33c26667b9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: aoe: avoid potential deadlock at set_capacity", "id": "2273232", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273232"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naoe: avoid potential deadlock at set_capacity\nMove set_capacity() outside of the section procected by (&d->lock).\nTo avoid possible interrupt unsafe locking scenario:\nCPU0 CPU1\n---- ----\n[1] lock(&bdev->bd_size_lock);\nlocal_irq_disable();\n[2] lock(&d->lock);\n[3] lock(&bdev->bd_size_lock);\n<Interrupt>\n[4] lock(&d->lock);\n*** DEADLOCK ***\nWhere [1](&bdev->bd_size_lock) hold by zram_add()->set_capacity().\n[2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()\nis trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(&d->lock) from\naoecmd_cfg_rsp() will lead to deadlock.\nSo the simplest solution is breaking lock dependency\n[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()\noutside."], "name": "CVE-2024-26775", "package_state": [{"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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26775\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26775\nhttps://lore.kernel.org/linux-cve-announce/2024040309-CVE-2024-26775-8dc1@gregkh/T"], "threat_severity": "Low"}

{}