Improper update of reference count in Linux kernel - CVE-2026-52960
Published: June 25, 2026
Vulnerability identifier: #VU135414
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52960
CWE-ID: CWE-911
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper reference count management in ceph_process_folio_batch in fs/ceph/addr.c when processing folios for writeback. A local user can trigger handling of folios not suitable for writeback to cause a denial of service.
How to mitigate CVE-2026-52960
Install security update from vendor's repository.