CVE-2026-80962 Linux Kernel dm-pcache - Out-of-Bounds Read & Write

Linux kernel dm-pcache contains an out-of-bounds read and write caused by unvalidated geometry fields from on-disk cache_info, letting attackers with CAP_SYS_ADMIN privileges cause memory corruption, exploit requires CAP_SYS_ADMIN.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out-of-Bounds Read
Impact
Denial Of Service, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 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

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