Vulnerability identifier: #VU90852

Vulnerability 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-2021-47495

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the drivers/net/usb/usbnet.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/b9eba0a4a527e04d712f0e0401e5391ef124b33e
http://git.kernel.org/stable/c/524f333e98138d909a0a0c574a9ff6737dce2767
http://git.kernel.org/stable/c/74b3b27cf9fecce00cd8918b7882fd81191d0aa4
http://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448ed
http://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20
http://git.kernel.org/stable/c/693ecbe8f799405f8775719deedb1f76265d375a
http://git.kernel.org/stable/c/7e8b6a4f18edee070213cb6a77118e8a412253c5
http://git.kernel.org/stable/c/397430b50a363d8b7bdda00522123f82df6adc5e

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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.