Vulnerability · Published Oct 13, 2026 · Assigned by microsoft
CVE-2026-62840Linux Kernel Elevation of Privilege Vulnerability
High 7.0
In plain English
A high-severity security flaw in Linux 3P (Third Party) Distros from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 89.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Linux 3P (Third Party) Distros | 1.0.0 – before 7.3 |
Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Linux Kernel Elevation of Privilege Vulnerability vendor-advisory, patch