SB2026050288 - NULL pointer dereference in Linux kernel auxdisplay driver
Published: May 2, 2026
Security Bulletin ID
SB2026050288
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-2026-31753)
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 linedisp_release when releasing the embedded linedisp device after the attachment has already been removed. A local user can trigger the release path to cause a denial of service.
The issue can be reached during linedisp_unregister() and from certain linedisp_register() error paths.
Remediation
Install update from vendor's website.