SB20240620189 - NULL pointer dereference in Linux kernel smc
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620189
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) NULL pointer dereference (CVE-ID: CVE-2022-48751)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the smc_stat_fallback(), smc_switch_to_fallback(), smc_listen_decline(), smc_listen_work(), smc_sendmsg(), smc_setsockopt() and smc_getsockopt() 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/38f0bdd548fd2ef5d481b88d8a2bfef968452e34
- https://git.kernel.org/stable/c/4284225cd8001e134f5cf533a7cd244bbb654d0f
- https://git.kernel.org/stable/c/c0bf3d8a943b6f2e912b7c1de03e2ef28e76f760
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17