Buffer overflow in Linux kernel - CVE-2023-53526
Published: October 1, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116300
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-2023-53526
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the jbd2_journal_try_remove_checkpoint() function in fs/jbd2/checkpoint.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2023-53526
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2298f2589903a8bc03061b54b31fd97985ab6529
- https://git.kernel.org/stable/c/590a809ff743e7bd890ba5fb36bc38e20a36de53
- https://git.kernel.org/stable/c/dbafe636db415299e54d9dfefc1003bda9e71c9d
- https://git.kernel.org/stable/c/ef5fea70e5915afd64182d155e72bfb4f275e1fc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.132