Use-after-free in Linux kernel - CVE-2024-56762
Published: January 7, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU102394
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2024-56762
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2024-56762
Install update from vendor's website.
Sources
- 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