CVE-2026-90052 Linux kernel dm-integrity - Buffer Overflow

Linux kernel dm-integrity contains a buffer overflow caused by writing a checksum past the end of the allocated buffer in integrity_metadata during keyed discard operations, letting attackers cause memory corruption, exploit requires crafted discard operations.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, 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
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for commit 68c5c42567bc.

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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