SB20250120110 - Incorrect calculation in Linux kernel io_uring
Published: January 20, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250120110
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) Incorrect calculation (CVE-ID: CVE-2025-21655)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect calculation within the io_queue_deferred() and io_eventfd_ops() functions in io_uring/io_uring.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/6b63308c28987c6010b1180c72a6db4df6c68033
- https://git.kernel.org/stable/c/8efff2aa2d95dc437ab67c5b4a9f1d3f367baa10
- https://git.kernel.org/stable/c/a7085c3ae43b86d4b3d1b8275e6a67f14257e3b7
- https://git.kernel.org/stable/c/c9a40292a44e78f71258b8522655bffaf5753bdb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.125
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.72