SB2024123061 - Use-after-free in Linux kernel io_uring
Published: December 30, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024123061
CSH 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 vulnerability.
1) Use-after-free (CVE-ID: CVE-2024-56584)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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_init_wq_offload() function in io_uring/tctx.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e
- https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4
- https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0
- https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.5