Type Confusion in Linux kernel - CVE-2026-90312
Published: September 18, 2026
Vulnerability identifier: #VU151179
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90312
CWE-ID: CWE-843
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access underlying kernel object data.
The vulnerability exists due to type confusion in the BPF verifier's check_atomic_load() function when verifying a load-acquire operation that fetches into its own source register. A local user can load a crafted BPF program to access underlying kernel object data.
Affected software
Linux kernel
How to mitigate CVE-2026-90312
Install security update from vendor's repository.