Incorrect calculation in Linux kernel - CVE-2026-92518
Published: September 18, 2026
Vulnerability identifier: #VU151003
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-92518
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause kernel stack corruption.
The vulnerability exists due to an incorrect tailcall jump-offset calculation in the RISC-V BPF JIT compiler when executing BPF tail calls with CONFIG_CFI_CLANG enabled. A local user can trigger the erroneous tailcall jump to cause kernel stack corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-92518
Install security update from vendor's repository.