Memory leak in Linux kernel ipv6

1) Memory leak

EUVDB-ID: #VU96407

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2022-48910

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the addrconf_ifdown() and addrconf_del_rs_timer() functions in net/ipv6/addrconf.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

External links

http://git.kernel.org/stable/c/9a8736b2da28b24f01707f592ff059b9f90a058c
http://git.kernel.org/stable/c/c71bf3229f9e9dd60ba02f5a5be02066edf57012
http://git.kernel.org/stable/c/9588ac2eddc2f223ebcebf6e9f5caed84d32922b
http://git.kernel.org/stable/c/f4c63b24dea9cc2043ff845dcca9aaf8109ea38a
http://git.kernel.org/stable/c/b11781515208dd31fbcd0b664078dce5dc44523f
http://git.kernel.org/stable/c/72124e65a70b84e6303a5cd21b0ac1f27d7d61a4
http://git.kernel.org/stable/c/9995b408f17ff8c7f11bc725c8aa225ba3a63b1c

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.