SB2025102357 - Improper locking in Linux kernel block
Published: October 23, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025102357
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 security vulnerability.
1) Improper locking (CVE-ID: CVE-2023-53730)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the adjust_inuse_and_calc_cost() function in block/blk-iocost.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/3376c4fe2db4aea2dc721a27a999c41fdb45b54f
- https://git.kernel.org/stable/c/8563b58a4360e648ce18f0e98a75a4be51667431
- https://git.kernel.org/stable/c/8ceeb3fc86a83700bb1585c189006080a47e8506
- https://git.kernel.org/stable/c/8d211554679d0b23702bd32ba04aeac0c1c4f660
- https://git.kernel.org/stable/c/9279a1b74ad98039d5d44d26b9e7a9cfe655b6d3
- https://git.kernel.org/stable/c/eb120c0aff5ceab9c9c46b87f302465bbf2bbaed
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.121