Vulnerability identifier: #VU94392

Vulnerability 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-2022-48839

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 tpacket_rcv() and packet_recvmsg() functions in net/packet/af_packet.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/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0
http://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33
http://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da
http://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d
http://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02
http://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a
http://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2
http://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a

---

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.