Resource management error in Linux kernel sched



| Updated: 2025-05-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-47512
CWE-ID CWE-399
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource management error

EUVDB-ID: #VU92962

Risk: Low

CVSSv4.0: 4.3 [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 - Resource Management Errors

Exploit availability: No

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.10 - 5.16 rc8

CPE2.3 External links

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


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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