SB2024062075 - Improper locking in Linux kernel
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062075
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-2021-47603)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the kauditd_send_queue() and audit_net_init() functions in kernel/audit.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/75fdb751f84727d614deea0571a1490c3225d83a
- https://git.kernel.org/stable/c/8389f50ceb854cb437fefb9330d5024ed3c7c1f5
- https://git.kernel.org/stable/c/0d3277eabd542fb662be23696e5ec9f390d688e1
- https://git.kernel.org/stable/c/4cc6badff97f74d0fce65f9784b5df3b64e4250b
- https://git.kernel.org/stable/c/a5f4d17daf2e6cd7c1d9676b476147f6b4ac53f2
- https://git.kernel.org/stable/c/f4b3ee3c85551d2d343a3ba159304066523f730f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.259
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.222
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.168