CVE-2026-23039

In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix NULL fb and crtc dereferences on USB disconnect On disconnect drm_atomic_helper_disable_all() is called which sets both the fb and crtc for a plane to NULL before invoking a commit. This causes a kernel oops on every display disconnect. Add guards for those dereferences.

Package Linux Kernel
Published 2026-01-31
Last modified 2026-04-15
Patch available
Yes

Affected versions

Linux kernel versions 6.18 and later are affected. Fixed in 6.18.7, 6.19 and their respective stable series.

Affected from
≥ 6.18
Fixed in
✓ 6.18.7 6.18.x ✓ 6.19

References

2 total

Frequently asked questions

  • What is CVE-2026-23039?

    CVE-2026-23039 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.7 and 6.19. CVE-2026-23039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-23039?

    Yes. CVE-2026-23039 has been patched. Fixed versions include 6.18.7 and 6.19. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-23039 actively exploited?

    No. CVE-2026-23039 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Back to
All CVEs
View on
NVD / NIST