CVE-2026-98260 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability caused by delayed cleanup of POSIX timers after de_thread() during exec, letting attackers cause kernel memory corruption, exploit requires triggering execve failure in non-leader threads.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Out Of Bounds Rw
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix applied.

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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