#VU92924 Improper locking in Linux kernel - CVE-2022-48721
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92924
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-2022-48721
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 smc_stat_fallback(), smc_switch_to_fallback() and smc_clcsock_data_ready() functions in net/smc/af_smc.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/0ef6049f664941bc0f75828b3a61877635048b27
- https://git.kernel.org/stable/c/504078fbe9dd570d685361b57784a6050bc40aaa
- https://git.kernel.org/stable/c/341adeec9adad0874f29a0a1af35638207352a39
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17