SB20251001120 - Buffer overflow in Linux kernel jbd2
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001120
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2023-53526)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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
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.
Remediation
Install update from vendor's website.
References
- 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