Incorrect calculation in Linux kernel - CVE-2026-89906
Published: September 17, 2026
Vulnerability identifier: #VU150382
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-89906
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-89906
Install security update from vendor's repository.