SB2024062721 - Remote denial of service in Linux kernel smc
Published: June 27, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062721
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2023-52775)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within the smcr_clnt_conf_first_link() function in net/smc/af_smc.c when handling SMC DECLINE messages. A remote attacker can send specially crafted SMC DECLINE message to the system, trigger memory corruption and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5ada292b5c504720a0acef8cae9acc62a694d19c
- https://git.kernel.org/stable/c/90072af9efe8c7bd7d086709014ddd44cebd5e7c
- https://git.kernel.org/stable/c/94a0ae698b4d5d5bb598e23228002a1491c50add
- https://git.kernel.org/stable/c/7234d2b5dffa5af77fd4e0deaebab509e130c6b1
- https://git.kernel.org/stable/c/e6d71b437abc2f249e3b6a1ae1a7228e09c6e563
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.203
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.141
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.65
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7