Race condition in Linux kernel mlx5 core driver

1) Race condition

EUVDB-ID: #VU92930

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48745

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the mlx5_stop_sync_reset_poll() function in drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/502c37b033fab7cde3e95a570af4f073306be45e
http://git.kernel.org/stable/c/f895ebeb44d09d02674cfdd0cfc2bf687603918c
http://git.kernel.org/stable/c/2a038dd1d942f8fbc495c58fa592ff24af05f1c2
http://git.kernel.org/stable/c/3c5193a87b0fea090aa3f769d020337662d87b5e

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.