Vulnerability identifier: #VU64077

Vulnerability risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1671

CWE-ID: CWE-476

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 a NULL pointer dereference error in the rxrpc_preparse_s in net/rxrpc/server_key.c in the Linux kernel. A local user can crash the system or leak internal kernel information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://ubuntu.com/security/notices/USN-5469-1
http://bugzilla.redhat.com/show_bug.cgi?id=2083992

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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.