#VU104697 Improper locking in Linux kernel - CVE-2022-49327
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104697
Vulnerability risk: Low
CVSSv4.0: 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-2022-49327
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the run_cache_set() function in drivers/md/bcache/super.c, within the bch_journal_space_reserve(), do_journal_discard() and journal_reclaim() functions in drivers/md/bcache/journal.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/1dda32aed6f62c163f38ff947ef5b3360e329159
- https://git.kernel.org/stable/c/32feee36c30ea06e38ccb8ae6e5c44c6eec790a6
- https://git.kernel.org/stable/c/5607652823ac65e2c6885e73bd46d5a4f9a20363
- https://git.kernel.org/stable/c/59afd4f287900c8187e968a4153ed35e6b48efce
- https://git.kernel.org/stable/c/6332ea3e35efa12dc08f0cbf5faea5e6e8eb0497
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14