CVE-2026-89553

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Not reachable from network protocols, adjacent radios, or physical buses.\nAC:L - The attacker controls both sides of the race with threads that GEM_INFO and GEM_CLOSE the same handle, so close kfree()s the nouveau_vma while info still uses it. Skipping UVMM (legacy GEM_NEW) selects the vulnerable path; no victim timing or rare config is required.\nPR:L - NOUVEAU_GEM_INFO and GEM_CLOSE are DRM_RENDER_ALLOW with no DRM_ROOT_ONLY or capability checks. Any unprivileged local user who can open the nouveau render node (typical render/video group or uaccess ACL) can trigger it without init-namespace root.\nUI:N - Exploitation needs only the attacker opening their own DRM client, creating a GEM BO, and racing GEM_INFO against GEM_CLOSE on that handle; no separate victim action is required.\nS:U - The use-after-free corrupts kernel heap state (struct nouveau_vma) inside the host nouveau driver. Impact stays in the same kernel authority; this is not a VM escape or IOMMU/DMA isolation bypass.\nC:H - Use-after-free of struct nouveau_vma lets GEM_INFO read vma->addr after kfree, and concurrent walks of nvbo->vma_list can follow attacker-reused slab objects, enabling kernel memory disclosure as with other UAFs.\nI:H - UAF of the VMA plus concurrent list_del/list_del_init on nvbo->vma_list enables heap spraying and list-pointer corruption, supporting arbitrary kernel writes and control-flow hijack as with other kernel UAFs.\nA:H - Dereferencing a freed nouveau_vma in GEM_INFO or walking a concurrently deleted vma_list causes a kernel oops/panic; the attacker can repeat the race to crash or hang the system."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/nouveau/nouveau_gem.c"], "versions": [{"version": 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{"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "3.1", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": 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"https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81"}, {"url": "https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a"}, {"url": "https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409"}, {"url": "https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e"}, {"url": "https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d"}], "title": "nouveau/gem: reserve the bo in the info ioctl around the vma lookup", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-89553", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T19:23:54.129922Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:26:43.449Z"}}]}}

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Not reachable from network protocols, adjacent radios, or physical buses.\nAC:L - The attacker controls both sides of the race with threads that GEM_INFO and GEM_CLOSE the same handle, so close kfree()s the nouveau_vma while info still uses it. Skipping UVMM (legacy GEM_NEW) selects the vulnerable path; no victim timing or rare config is required.\nPR:L - NOUVEAU_GEM_INFO and GEM_CLOSE are DRM_RENDER_ALLOW with no DRM_ROOT_ONLY or capability checks. Any unprivileged local user who can open the nouveau render node (typical render/video group or uaccess ACL) can trigger it without init-namespace root.\nUI:N - Exploitation needs only the attacker opening their own DRM client, creating a GEM BO, and racing GEM_INFO against GEM_CLOSE on that handle; no separate victim action is required.\nS:U - The use-after-free corrupts kernel heap state (struct nouveau_vma) inside the host nouveau driver. Impact stays in the same kernel authority; this is not a VM escape or IOMMU/DMA isolation bypass.\nC:H - Use-after-free of struct nouveau_vma lets GEM_INFO read vma->addr after kfree, and concurrent walks of nvbo->vma_list can follow attacker-reused slab objects, enabling kernel memory disclosure as with other UAFs.\nI:H - UAF of the VMA plus concurrent list_del/list_del_init on nvbo->vma_list enables heap spraying and list-pointer corruption, supporting arbitrary kernel writes and control-flow hijack as with other kernel UAFs.\nA:H - Dereferencing a freed nouveau_vma in GEM_INFO or walking a concurrently deleted vma_list causes a kernel oops/panic; the attacker can repeat the race to crash or hang the system."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "e758a3111914af7ee4351be86f1ac0efe87ed06e", "lessThan": "e05c28bd6043d0fd0bea9c3fc49300a8871a1a81", "versionType": "git"}, {"status": "affected", "version": "e758a3111914af7ee4351be86f1ac0efe87ed06e", "lessThan": "208867763843aa82efcbe3b771f1b8e6c7aa820a", "versionType": "git"}, {"status": "affected", "version": "e758a3111914af7ee4351be86f1ac0efe87ed06e", "lessThan": "ff110e85837d7ecd83f36078107be240ff5ae409", "versionType": "git"}, {"status": "affected", "version": "e758a3111914af7ee4351be86f1ac0efe87ed06e", "lessThan": "e60466011ac3a6b8045e6cc3c2cbb30d58039d2e", "versionType": "git"}, {"status": "affected", "version": "e758a3111914af7ee4351be86f1ac0efe87ed06e", "lessThan": "5e17160d41d92823f3379c1982e1369680c5ce4d", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/nouveau/nouveau_gem.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.1"}, {"status": "unaffected", "version": "0", "lessThan": "3.1", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.109", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.50", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.4", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/nouveau/nouveau_gem.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81"}, {"url": "https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a"}, {"url": "https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409"}, {"url": "https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e"}, {"url": "https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnouveau/gem: reserve the bo in the info ioctl around the vma lookup\n\nIn the non-uvmm path, there could be a race between the info lookup\nfinding the vma, and the gem close path closing the vma leading\nto a use-after-free.\n\nSpotted with the help of Opus 4.6."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.157", "versionStartIncluding": "3.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.109", "versionStartIncluding": "3.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.50", "versionStartIncluding": "3.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2.4", "versionStartIncluding": "3.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.3", "versionStartIncluding": "3.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:48:46.072Z"}}}, "cveMetadata": {"cveId": "CVE-2026-89553", "state": "PUBLISHED", "dateUpdated": "2026-10-19T08:48:46.072Z", "dateReserved": "2026-09-11T19:38:34.723Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-09-11T19:44:26.836Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"https://git.kernel.org/stable/c/f57e0d3bee3f7a459c048e10fd1cbcfd1dac2e0f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Use-after-free in nouveau/gem due to race condition", "id": "2532079", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532079"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-367", "details": ["A flaw was found in the Linux kernel's nouveau/gem component. A race condition exists where the graphics execution manager (GEM) close path can close a virtual memory area (VMA) while an information lookup is still trying to access it. This timing issue leads to a use-after-free vulnerability, which could allow a local attacker to potentially achieve arbitrary code execution or cause a denial of service."], "name": "CVE-2026-89553", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-11T19:44:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89553\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89553\nhttps://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a\nhttps://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d\nhttps://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e\nhttps://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e758a3111914af7ee4351be86f1ac0efe87ed06e,208867763843aa82efcbe3b771f1b8e6c7aa820a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e758a3111914af7ee4351be86f1ac0efe87ed06e,ff110e85837d7ecd83f36078107be240ff5ae409)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e758a3111914af7ee4351be86f1ac0efe87ed06e,e60466011ac3a6b8045e6cc3c2cbb30d58039d2e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e758a3111914af7ee4351be86f1ac0efe87ed06e,5e17160d41d92823f3379c1982e1369680c5ce4d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T13:15:05.472753+00:00", "updated": "2026-09-15T22:00:17.651021+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}