Buffer overflow in Linux kernel - CVE-2025-68283
Published: December 16, 2025
Vulnerability identifier: #VU120122
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-68283
CWE-ID: CWE-119
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 escalate privileges on the system.
The vulnerability exists due to memory corruption within the decode_new_primary_temp(), ceph_get_primary_affinity(), decode_new_primary_affinity() and decode_new_up_state_weight() functions in net/ceph/osdmap.c. A local user can escalate privileges on the system.
How to mitigate CVE-2025-68283
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/57f5fbae9f1024aba17ff75e00433324115c548a
- https://git.kernel.org/stable/c/b4368b7f97014e1015445d61abd0b27c4c6e8424
- https://git.kernel.org/stable/c/becc488a4d864db338ebd4e313aa3c77da24b604
- https://git.kernel.org/stable/c/e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d
- https://git.kernel.org/stable/c/ec3797f043756a94ea2d0f106022e14ac4946c02