Resource management error in Linux kernel sched

1) Resource management error

EUVDB-ID: #VU93280

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47419

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 taprio_destroy() function in net/sched/sch_taprio.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/c951c08a5996365aecbc5f1a9bddec3905e1ddfc
http://git.kernel.org/stable/c/3ec73ffeef54596c32aff0e73fe60971b9c8b866
http://git.kernel.org/stable/c/7a1c1af341041221b3acb9d7036cc2b43e0efa75
http://git.kernel.org/stable/c/a56d447f196fa9973c568f54c0d76d5391c3b0c0

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.