{"api_version":"1","generated_at":"2026-10-29T02:42:29+00:00","cve":"CVE-2026-99095","urls":{"html":"https://cve.report/CVE-2026-99095","api":"https://cve.report/api/cve/CVE-2026-99095.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99095","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99095"},"summary":{"title":"drm/vc4: drain the hangcheck timer and works on V3D unbind","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: drain the hangcheck timer and works on V3D unbind\n\nNothing stops the hangcheck timer that submitted jobs arm, or the\njob_done_work that the render-done interrupt queues, at teardown:\nvc4_irq_disable() cancels only overflow_mem_work, and vc4_gem_destroy()\nruns from the drm-managed release, after vc4_v3d_unbind() has already\nuninstalled the V3D interrupt and cleared vc4->v3d. A timer still armed\nby then reads V3D registers through the NULL vc4->v3d pointer, and the\nlate callbacks run on the vc4_dev embedding them after it has been\nfreed.\n\nDrain them in vc4_v3d_unbind(): shut the timer down and cancel\nreset_work before the interrupt is taken down, because its\nvc4_irq_reset() re-enables it, then flush job_done_work so that\ncompletions queued at teardown still release their jobs.\n\nThis issue was found by an in-house static analysis tool.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-26 15:16:48","updated_at":"2026-10-26 15:16:48"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ade226dfd28cf2fd1dce143c556d1ee77d953696","name":"https://git.kernel.org/stable/c/ade226dfd28cf2fd1dce143c556d1ee77d953696","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e61465d3e0292daebf4dbb34e0add635e2439569","name":"https://git.kernel.org/stable/c/e61465d3e0292daebf4dbb34e0add635e2439569","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/17c5fa371de2d5508755cd4cd227cc8e2bb99240","name":"https://git.kernel.org/stable/c/17c5fa371de2d5508755cd4cd227cc8e2bb99240","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a046cd60ff3f4a8c8e672b3b18902682c1f91731","name":"https://git.kernel.org/stable/c/a046cd60ff3f4a8c8e672b3b18902682c1f91731","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/94cf5971b1d04c6382437387c4dc3836cc7a1437","name":"https://git.kernel.org/stable/c/94cf5971b1d04c6382437387c4dc3836cc7a1437","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-99095","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99095","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 17c5fa371de2d5508755cd4cd227cc8e2bb99240 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 a046cd60ff3f4a8c8e672b3b18902682c1f91731 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 e61465d3e0292daebf4dbb34e0add635e2439569 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 ade226dfd28cf2fd1dce143c556d1ee77d953696 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 94cf5971b1d04c6382437387c4dc3836cc7a1437 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.57 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.11 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/vc4/vc4_v3d.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"17c5fa371de2d5508755cd4cd227cc8e2bb99240","status":"affected","version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","versionType":"git"},{"lessThan":"a046cd60ff3f4a8c8e672b3b18902682c1f91731","status":"affected","version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","versionType":"git"},{"lessThan":"e61465d3e0292daebf4dbb34e0add635e2439569","status":"affected","version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","versionType":"git"},{"lessThan":"ade226dfd28cf2fd1dce143c556d1ee77d953696","status":"affected","version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","versionType":"git"},{"lessThan":"94cf5971b1d04c6382437387c4dc3836cc7a1437","status":"affected","version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/vc4/vc4_v3d.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.5"},{"lessThan":"4.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.57","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"4.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"4.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.57","versionStartIncluding":"4.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.11","versionStartIncluding":"4.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"4.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: drain the hangcheck timer and works on V3D unbind\n\nNothing stops the hangcheck timer that submitted jobs arm, or the\njob_done_work that the render-done interrupt queues, at teardown:\nvc4_irq_disable() cancels only overflow_mem_work, and vc4_gem_destroy()\nruns from the drm-managed release, after vc4_v3d_unbind() has already\nuninstalled the V3D interrupt and cleared vc4->v3d. A timer still armed\nby then reads V3D registers through the NULL vc4->v3d pointer, and the\nlate callbacks run on the vc4_dev embedding them after it has been\nfreed.\n\nDrain them in vc4_v3d_unbind(): shut the timer down and cancel\nreset_work before the interrupt is taken down, because its\nvc4_irq_reset() re-enables it, then flush job_done_work so that\ncompletions queued at teardown still release their jobs.\n\nThis issue was found by an in-house static analysis tool."}],"providerMetadata":{"dateUpdated":"2026-10-26T14:52:02.647Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/17c5fa371de2d5508755cd4cd227cc8e2bb99240"},{"url":"https://git.kernel.org/stable/c/a046cd60ff3f4a8c8e672b3b18902682c1f91731"},{"url":"https://git.kernel.org/stable/c/e61465d3e0292daebf4dbb34e0add635e2439569"},{"url":"https://git.kernel.org/stable/c/ade226dfd28cf2fd1dce143c556d1ee77d953696"},{"url":"https://git.kernel.org/stable/c/94cf5971b1d04c6382437387c4dc3836cc7a1437"}],"title":"drm/vc4: drain the hangcheck timer and works on V3D unbind","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99095","datePublished":"2026-10-26T14:52:02.647Z","dateReserved":"2026-09-25T10:25:14.390Z","dateUpdated":"2026-10-26T14:52:02.647Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-26 15:16:48","lastModifiedDate":"2026-10-26 15:16:48","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99095","Ordinal":"1","Title":"drm/vc4: drain the hangcheck timer and works on V3D unbind","CVE":"CVE-2026-99095","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99095","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: drain the hangcheck timer and works on V3D unbind\n\nNothing stops the hangcheck timer that submitted jobs arm, or the\njob_done_work that the render-done interrupt queues, at teardown:\nvc4_irq_disable() cancels only overflow_mem_work, and vc4_gem_destroy()\nruns from the drm-managed release, after vc4_v3d_unbind() has already\nuninstalled the V3D interrupt and cleared vc4->v3d. A timer still armed\nby then reads V3D registers through the NULL vc4->v3d pointer, and the\nlate callbacks run on the vc4_dev embedding them after it has been\nfreed.\n\nDrain them in vc4_v3d_unbind(): shut the timer down and cancel\nreset_work before the interrupt is taken down, because its\nvc4_irq_reset() re-enables it, then flush job_done_work so that\ncompletions queued at teardown still release their jobs.\n\nThis issue was found by an in-house static analysis tool.","Type":"Description","Title":"drm/vc4: drain the hangcheck timer and works on V3D unbind"}]}}}