SB20251210144 - Division by zero in Linux kernel block
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB20251210144
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) Division by zero (CVE-ID: CVE-2023-53783)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a division by zero error within the calc_lcoefs() 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/3538ade9d8c2ba41088e395de916f2599fadba8f
- https://git.kernel.org/stable/c/6e291810fe83a384700eb24a1f714966391ed562
- https://git.kernel.org/stable/c/984af1e66b4126cf145153661cc24c213e2ec231
- https://git.kernel.org/stable/c/9e8bf9f95f7a299fa9ea45b678d001806ad5e12c
- https://git.kernel.org/stable/c/b96d7b4a9745fbd0c8384608ceb1f50415e862fa
- https://git.kernel.org/stable/c/bf8eb1fd6110871e6232e8e7efe399276ef7e6f6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.16