SB20260425152 - NULL pointer dereference in Linux kernel loongarch kernel
Published: April 25, 2026
Security Bulletin ID
SB20260425152
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-2026-31559)
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 attacker to cause a denial of service.
The vulnerability exists due to improper handling of a NULL pointer in cpu model parsing from device tree when memory allocation fails during early boot. A local attacker can trigger memory allocation failure during device tree parsing to cause a denial of service.
The issue can lead to a kernel oops during early boot.
Remediation
Install update from vendor's website.