SB20240620199 - Improper locking in Linux kernel smc
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620199
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-48721)
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.
References
- 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