Resource management error in Linux kernel - CVE-2021-47512
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92962
CSH Severity: Low
CVSS v4.0: 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-2021-47512
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the fq_pie_destroy() function in net/sched/sch_fq_pie.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-47512
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/2a51edaf5cc563574878b93d7ef3d5955dda7030
- https://git.kernel.org/stable/c/d86216dfda7c98375f809e26a30bfdaaba21d46e
- https://git.kernel.org/stable/c/61c2402665f1e10c5742033fce18392e369931d7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16