CVE-2026-62840
7.0HighPublished 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-367
Impact
A local attacker with an existing account can escalate privileges to root or kernel level. They need prior local access to execute code on the target system.
Root cause
A time-of-check to time-of-use (TOCTOU) race condition exists in the Linux kernel.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Specific fixed versions and workarounds are not listed in the initial advisory; review the vendor advisory at the provided MSRC link and apply the vendor-provided kernel update once published.
$ uname -rAI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.