SB2025010723 - Use-after-free in Linux kernel io_uring
Published: January 7, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025010723
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2024-56762)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the io_sqpoll_wait_sq() and io_sq_offload_create() functions in io_uring/sqpoll.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/6237331361711810d8f2e3fbfe2f7a6f9548f5e0
- https://git.kernel.org/stable/c/80120bb4eef7848d5aa3b1a0cd88367cd05fbe03
- https://git.kernel.org/stable/c/8e8494c83cf73168118587e9567e4f7e50ce4fd8
- https://git.kernel.org/stable/c/e33ac68e5e21ec1292490dfe061e75c0dbdd3bd4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.123
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.69