SB20250226225 - Memory leak in Linux kernel landlock
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226225
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) Memory leak (CVE-ID: CVE-2021-47654)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the populate_ruleset() function in samples/landlock/sandboxer.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/017196730299ccd6eed24bbfabed8af4ffd81530
- https://git.kernel.org/stable/c/20fbf100f84b9aeb9c91421abe1927bc152bc32b
- https://git.kernel.org/stable/c/49b0d8bf05809df5f87e5c03e26d74bdfdab4571
- https://git.kernel.org/stable/c/66b513b7c64a7290c1fbb88e657f7cece992e131
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.33
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18