SB2026091760 - Incorrect calculation in Linux kernel loongarch net
Published: September 17, 2026
Security Bulletin ID
SB2026091760
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2026-89906)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause soft lockups.
The vulnerability exists due to an incorrect jump offset calculation in LoongArch BPF JIT tail-call handling when performing extra JIT passes. A local user can trigger incorrect branch offsets to cause soft lockups.
Remediation
Install update from vendor's website.