CVE-2026-23039 — NULL Pointer Dereference in Linux
Severity
5.5MEDIUM
No vectorEPSS
0.0%
top 98.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 31
Description
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.
Affected Packages4 packages
▶CVEListV5linux/linux73cfd166e045769a1b42d36897accaa6e06b8102 — a255ec07f91d4c73a361a28b7a3d82f5710245f1+2
🔴Vulnerability Details
3OSV▶
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_ato↗2026-01-31
GHSA▶
GHSA-8v58-m3wh-hhg4: In the Linux kernel, the following vulnerability has been resolved:
drm/gud: fix NULL fb and crtc dereferences on USB disconnect
On disconnect drm_a↗2026-01-31