SB2026091759 - Memory corruption in Linux kernel loongarch net
Published: September 17, 2026
Security Bulletin ID
SB2026091759
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory corruption (CVE-ID: CVE-2026-89905)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to improper stack layout handling in the LoongArch BPF JIT prologue and epilogue when compiling BPF programs. A local user can load a BPF program for JIT compilation to cause memory corruption.
Exploitation requires arena_vm_start to be dynamically enabled.
Remediation
Install update from vendor's website.