CVE-2026-62840
Linux Kernel Elevation of Privilege Vulnerability
Microsoft Linux 3P (Third Party) DistrosOperating systemsCVSS
7.0HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.16%Chance of exploitation activity in the next 30 days, higher than 4% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 7.3Linux 3P (Third Party) DistrosCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Vendor and government advisories 1
Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.
Reports 1
1 outlet mention it. Reports are not confirmation; each links to its source.
Description
Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.
Text from CVE List
Affected versions 1
- Linux 3P (Third Party) Distrosaffected: 1.0.0 before 7.3CVE List