SB20260325134 - NULL Pointer Dereference in Linux kernel ipv4
Published: March 25, 2026
Security Bulletin ID
SB20260325134
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 security vulnerability.
1) NULL Pointer Dereference (CVE-ID: CVE-2026-23316)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper memory access in the net subsystem when handling multipath hash seed operations. A local user can trigger a kernel panic by accessing misaligned memory via atomic operations, leading to a denial of service.
The issue arises on ARM64 systems when the kernel is compiled with Clang and LTO enabled, where READ_ONCE() and WRITE_ONCE() operations on a 4-byte aligned 8-byte structure cause alignment faults or tear-write conditions.
Remediation
Install update from vendor's website.