CVE-2026-99218 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability caused by releasing parked threads without holding RCU in coredump_finish(), letting attackers cause kernel memory corruption or crash, exploit requires kernel coredump processing.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2 November 2026
Updated
3 November 2026

Vendor fix

Update to the latest Linux kernel version with the fix for coredump RCU handling.

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

← All CVEs