NULL pointer dereference in Linux kernel - CVE-2026-53135
Published: June 26, 2026
Vulnerability identifier: #VU135655
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53135
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in dp_sdp_message_debugfs_write() in the AMD display debugfs interface when handling writes to the sdp_message debugfs node. A local user can write to the debugfs node to cause a denial of service.
A connector may be connected but not bound to any CRTC, such as after hot-plug before the next atomic commit.
How to mitigate CVE-2026-53135
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/7ae95c0275c330b5dbae806f8e431720edad776f
- https://git.kernel.org/stable/c/7fc4fab4acc307ad2903312c195872b2953d32c3
- https://git.kernel.org/stable/c/a2de1d71891a038a9346b2c1a72b88c8350f2479
- https://git.kernel.org/stable/c/adf67034b1f61f7119295208085bfd43f85f56af
- https://git.kernel.org/stable/c/b781f90a9528555c709e59789550893581ef0be4
- https://git.kernel.org/stable/c/bb6f705b73b5f191f14ad004e2c8c4b615806187
- https://git.kernel.org/stable/c/c90954cdea4d6998ec345de0d840d030c145b89e
- https://git.kernel.org/stable/c/ee9cfcf77a8e8af637396dc00966df5f701e661c