CVE-2026-62840 Linux Kernel - Privilege Escalation

Linux Kernel contains a TOCTOU race condition caused by improper synchronization, letting authorized local attackers elevate privileges, exploit requires local access with authorization.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-367

Vendor fix

Update to the latest Linux Kernel version with the race condition fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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