Vulnerability identifier: #VU90299

Vulnerability risk: Low

CVSSv3.1: 3.2 [AV:L/AC:L/PR:L/UI:U/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47309

CWE-ID: CWE-125

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 an out-of-bounds read error within the include/net/dst_metadata.h. 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/e7f3c9df40515a6c6b46f36c4c94cf48a043f887
http://git.kernel.org/stable/c/b61d327cd3cc5ea591f3bf751dd11e034f388bb5
http://git.kernel.org/stable/c/83bdcfbd968bcc91a0632b7b625e4a9b0cba5e0d
http://git.kernel.org/stable/c/8bb1589c89e61e3b182dd546f1021928ebb5c2a6
http://git.kernel.org/stable/c/8aa13a86964cdec4fd969ef677c6614ff068641a
http://git.kernel.org/stable/c/2179d96ec702cc33ead02a9ce40ece599b8538c5
http://git.kernel.org/stable/c/a915379594f1e045421635c6316d8f3ffa018c58
http://git.kernel.org/stable/c/67a9c94317402b826fc3db32afc8f39336803d97

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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.