Memory leak in Linux kernel BPF

1) Memory leak

EUVDB-ID: #VU69757

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-2022-3542

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

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the bnx2x_tpa_stop() function in drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c. A local user can force the system to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.1

External links

http://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=b43f9acbb8942b05252be83ac25a81cec70cc192

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.