CVE-2026-97415 Linux Kernel - Buffer Overflow

Linux kernel contains a buffer overflow vulnerability in BTRFS due to improper validation of ROOT_REF and ROOT_BACKREF item names, letting attackers cause out-of-bounds reads, exploit requires crafted corrupted items.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Information Disclosure, 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
24 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix for BTRFS tree-checker 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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