{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99095","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.390Z","datePublished":"2026-10-26T14:52:02.647Z","dateUpdated":"2026-10-30T12:41:42.869Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:41:42.869Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vc4/vc4_v3d.c"],"versions":[{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"839eebfc95f8530feaa99677274912ac09b5820b","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"a1e7c7789aef551eea85de2f63989753c4fe9df6","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"17c5fa371de2d5508755cd4cd227cc8e2bb99240","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"a046cd60ff3f4a8c8e672b3b18902682c1f91731","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"e61465d3e0292daebf4dbb34e0add635e2439569","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"ade226dfd28cf2fd1dce143c556d1ee77d953696","status":"affected","versionType":"git"},{"version":"d5b1a78a772f1e31a94f8babfa964152ec5e9aa5","lessThan":"94cf5971b1d04c6382437387c4dc3836cc7a1437","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/gpu/drm/vc4/vc4_v3d.c"],"versions":[{"version":"4.5","status":"affected"},{"version":"0","lessThan":"4.5","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","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":"4.5","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/839eebfc95f8530feaa99677274912ac09b5820b"},{"url":"https://git.kernel.org/stable/c/a1e7c7789aef551eea85de2f63989753c4fe9df6"},{"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"}}}}