CVE-2026-99095 (GCVE-0-2026-99095)
Vulnerability from cvelistv5
Published
2026-10-26 14:52
Modified
2026-10-30 12:41
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/vc4: drain the hangcheck timer and works on V3D unbind
Nothing stops the hangcheck timer that submitted jobs arm, or the
job_done_work that the render-done interrupt queues, at teardown:
vc4_irq_disable() cancels only overflow_mem_work, and vc4_gem_destroy()
runs from the drm-managed release, after vc4_v3d_unbind() has already
uninstalled the V3D interrupt and cleared vc4->v3d. A timer still armed
by then reads V3D registers through the NULL vc4->v3d pointer, and the
late callbacks run on the vc4_dev embedding them after it has been
freed.
Drain them in vc4_v3d_unbind(): shut the timer down and cancel
reset_work before the interrupt is taken down, because its
vc4_irq_reset() re-enables it, then flush job_done_work so that
completions queued at teardown still release their jobs.
This issue was found by an in-house static analysis tool.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 Version: d5b1a78a772f1e31a94f8babfa964152ec5e9aa5 |
||
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"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-\u003ev3d. A timer still armed\nby then reads V3D registers through the NULL vc4-\u003ev3d 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": "2026-10-30T12:41:42.869Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/839eebfc95f8530feaa99677274912ac09b5820b"
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{
"url": "https://git.kernel.org/stable/c/a1e7c7789aef551eea85de2f63989753c4fe9df6"
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{
"url": "https://git.kernel.org/stable/c/17c5fa371de2d5508755cd4cd227cc8e2bb99240"
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{
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"url": "https://git.kernel.org/stable/c/ade226dfd28cf2fd1dce143c556d1ee77d953696"
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{
"url": "https://git.kernel.org/stable/c/94cf5971b1d04c6382437387c4dc3836cc7a1437"
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"title": "drm/vc4: drain the hangcheck timer and works on V3D unbind",
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"cveId": "CVE-2026-99095",
"datePublished": "2026-10-26T14:52:02.647Z",
"dateReserved": "2026-09-25T10:25:14.390Z",
"dateUpdated": "2026-10-30T12:41:42.869Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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