Vulnerability identifier: #VU92884

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-2022-48748

CWE-ID: CWE-401

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 memory leak within the __allowed_ingress() function in net/bridge/br_vlan.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/446ff1fc37c74093e81db40811a07b5a19f1d797
http://git.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098
http://git.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511
http://git.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdff

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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.