Resource management error in Linux kernel - CVE-2021-47419
Published: June 25, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93280
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-2021-47419
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 taprio_destroy() function in net/sched/sch_taprio.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-47419
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/c951c08a5996365aecbc5f1a9bddec3905e1ddfc
- https://git.kernel.org/stable/c/3ec73ffeef54596c32aff0e73fe60971b9c8b866
- https://git.kernel.org/stable/c/7a1c1af341041221b3acb9d7036cc2b43e0efa75
- https://git.kernel.org/stable/c/a56d447f196fa9973c568f54c0d76d5391c3b0c0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.73
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.153