Improper locking in Linux kernel - CVE-2023-52903
Published: August 21, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU96361
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-52903
CWE-ID: CWE-667
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 perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the io_iopoll_complete() function in io_uring/io_uring.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2023-52903
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4
- https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845
- https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41b
- https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.165
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.89
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2