CVE-2026-97926 Linux Kernel ufs - Out of Bounds Read

Linux kernel ufs filesystem contains an out-of-bounds read caused by lack of validation of cylinder group metadata in ufs_read_cylinder(), letting attackers with crafted images cause memory corruption, exploit requires crafted filesystem image.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.15% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
25 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for cylinder group metadata validation.

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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