CVE-2026-62840

HIGH CVSS 3.1: 7.0 EPSS 0.16%
Updated Oct 16, 2026
Linux
Parameter Value
CVSS 7.0 (HIGH)
Affected Versions 1.0.0 — 7.3
Fixed In 7.3
Type CWE-367 (Time-of-check Time-of-use (TOCTOU))
Vendor Linux
Public PoC No

Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Microsoft Linux_3p_\(Third_Party\)_Distros
cpe:2.3:a:microsoft:linux_3p_\(third_party\)_distros:*:*:*:*:*:*:*:*
1.0.0 7.3