SB20260625102 - NULL pointer dereference in Linux kernel bridge cadence driver
Published: June 25, 2026
Security Bulletin ID
SB20260625102
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-53058)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the Cadence MHDP8546 DRM bridge driver when handling atomic enable error recovery paths. A local user can trigger link-up or register-read errors that reach modeset retry handling to cause a denial of service.
The issue occurs with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1af3b42e08a957e53bab8e1897393fe0a27d9fbf
- https://git.kernel.org/stable/c/43d6508ddbf9fb974fbc359a033154f78c9d4c8b
- https://git.kernel.org/stable/c/5302015daf26ef6b48e067f2b86c9482ac19e015
- https://git.kernel.org/stable/c/a3611554e599d1a24b45fd8415bacb72ce861e4b
- https://git.kernel.org/stable/c/cf2ac2cac8b319f89b3a3851ca0c5ffb6a549575