Memory leak in Linux kernel pci mlx5 driver

1) Memory leak

EUVDB-ID: #VU101983

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56742

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 mlx5vf_add_migration_pages() function in drivers/vfio/pci/mlx5/cmd.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/22e87bf3f77c18f5982c19ffe2732ef0c7a25f16
https://git.kernel.org/stable/c/769fe4ce444b646b0bf6ac308de80686c730c7df
https://git.kernel.org/stable/c/c44f1b2ddfa81c8d7f8e9b6bc76c427bc00e69d5

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.