CVE-2026-98982 Linux Kernel - Use After Free

Linux kernel contains a mount namespace vulnerability caused by allowing a pseudo dentry with DCACHE_NORCU flag to become the root of a mount, letting attackers cause use-after-free and potential denial of service, exploit requires bind mounting such a dentry.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the 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

← All CVEs