Incorrect calculation in Linux kernel - CVE-2026-98151
Published: September 28, 2026
Vulnerability identifier: #VU152291
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98151
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a verifier warning.
The vulnerability exists due to inconsistent synchronization of 32-bit register bounds and pointer offset state in the BPF verifier when verifying speculative pointer arithmetic in an unprivileged BPF program. A local user can load a BPF program that performs bounded scalar arithmetic on a map-value pointer to trigger a verifier warning.
The warning occurs when the verifier evaluates a subsequent register copy along a speculative path.
Affected software
Linux kernel
How to mitigate CVE-2026-98151
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3