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

Received
AliasesUBUNTU-CVE-2026-68233DEBIAN-CVE-2026-68233
Published 10-08-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-68233 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.7% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.17%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 18 · Related 16
MGASA-2026-0336MGASA-2026-0337OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24371-1SUSE-SU-2026:24379-1SUSE-SU-2026:24386-1

Timeline

  1. 10-08-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

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().

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu168 products
  • linuxAll versions (No fix recorded) | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.115-2 | < 7.1.6-1
Linux1 product
  • linux≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < 948cd4876dafbfab826384516df19fe813d9f1d1 | ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < cf55c6f1b62a89bf365c48bf731ccf69340e3a16 | ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < e9264ee59bd94970b80b7548f693bccf0d4628da | ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < a38f2724eb93a78ba250b01e0caf3468df4d3956 | ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < bac4c1a9af690b8635c6924872075c41d8763ed9 | ≥ c826a6e1064419f78855463cf29ce9e8b9d25bf4, < 6273dd3ffb54ec581855b82ae77331b66028249c | 4.5

3 vendors · 170 products

References

15 links
Show all 15 references