Memory corruption in Linux kernel - CVE-2026-97548
Published: September 28, 2026
Vulnerability identifier: #VU152654
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97548
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to access memory beyond the end of an in-memory btree cursor.
The vulnerability exists due to an incorrect cursor size calculation in the XFS rtrmap and rtrefcount _maxlevels_ondisk functions when processing a sufficiently large btree. A remote attacker can cause a sufficiently large btree to be processed to access memory beyond the end of an in-memory btree cursor.
User interaction is required.
Affected software
Linux kernel
How to mitigate CVE-2026-97548
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3