Use-after-free in Linux kernel - CVE-2023-53810
Published: December 10, 2025 / Updated: December 12, 2025
Vulnerability identifier: #VU119705
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-2023-53810
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 blk_complete_request(), blk_update_request() and blk_mq_submit_bio() functions in block/blk-mq.c. A local user can escalate privileges on the system.
How to mitigate CVE-2023-53810
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/7d206ec7a04e8545828191b6ea8b49d3ea61391f
- https://git.kernel.org/stable/c/874bdf43b4a7dc5463c31508f62b3e42eb237b08
- https://git.kernel.org/stable/c/92d5d233b9ff531cf9cc36ab4251779e07adb633
- https://git.kernel.org/stable/c/9cd1e566676bbcb8a126acd921e4e194e6339603
- https://git.kernel.org/stable/c/b278570e2c59d538216f8b656e97680188a8fba4
- https://git.kernel.org/stable/c/d206f79d9cd658665b37ce8134c6ec849ac7af0c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.111