Out-of-bounds read in Linux kernel - CVE-2026-68082
Published: August 13, 2026
Vulnerability identifier: #VU142243
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68082
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in decode_lockers() in net/ceph/cls_lock_client.c when parsing OSD-supplied lock information. A remote user can send a specially crafted OSD reply to disclose sensitive information.
Exploitation requires control of a malicious or compromised OSD and can be triggered against kernel clients that issue the lock.get_info class method, such as during RBD exclusive lock acquisition in a multi-tenant Ceph deployment.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-68082
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1