SB20240530144 - Memory leak in Linux kernel crypto driver
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240530144
CSH 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 vulnerability.
1) Memory leak (CVE-ID: CVE-2021-47052)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the sa_run() function in drivers/crypto/sa2ul.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/0e596b3734649041ed77edc86a23c0442bbe062b
- https://git.kernel.org/stable/c/dfd6443bf49ac17adf882ca46c40c506a0284bd6
- https://git.kernel.org/stable/c/b7bd0657c2036add71981d88a7fae50188150b6e
- https://git.kernel.org/stable/c/854b7737199848a91f6adfa0a03cf6f0c46c86e8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13