#VU104408 Memory leak in Linux kernel - CVE-2021-47654
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104408
Vulnerability risk: Low
CVSSv4.0: 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
CVE-ID: CVE-2021-47654
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- 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