VulnerabilityPublished 10 Aug 2026Updated 21 Oct 2026

CVE-2026-68233: Linux kernel · drm/vc4: Shut down BO cache timer before teardown

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in e9264ee59bd94970b80b7548f693bccf0d4628da : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e9264ee59bd94970b80b7548f693bccf0d4628da, cf55c6f1b62a89bf365c48bf731ccf69340e3a16, bac4c1a9af690b8635c6924872075c41d8763ed9 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < e9264ee59bd94970b80b7548f693bccf0d4628da	Fixed in e9264ee59bd94970b80b7548f693bccf0d4628da
LinuxLinux	Affected ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < cf55c6f1b62a89bf365c48bf731ccf69340e3a16	Fixed in cf55c6f1b62a89bf365c48bf731ccf69340e3a16
LinuxLinux	Affected ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < bac4c1a9af690b8635c6924872075c41d8763ed9	Fixed in bac4c1a9af690b8635c6924872075c41d8763ed9
LinuxLinux	Affected ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < a38f2724eb93a78ba250b01e0caf3468df4d3956	Fixed in a38f2724eb93a78ba250b01e0caf3468df4d3956
LinuxLinux	Affected ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < 6273dd3ffb54ec581855b82ae77331b66028249c	Fixed in 6273dd3ffb54ec581855b82ae77331b66028249c
LinuxLinux	Affected =4.5	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Shut down BO cache timer before teardown The BO cache timer callback schedules time_work, and time_work can rearm the timer through vc4_bo_cache_free_old(). vc4_bo_cache_destroy() deletes the timer and then cancels the work, which does not break that cycle: the work being cancelled can rearm the timer, and the timer then queues work again after teardown. Use timer_shutdown_sync() instead, so the timer cannot be rearmed and the cycle ends with cancel_work_sync().

References

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