Improper locking in Linux kernel nvme host driver

1) Improper locking

EUVDB-ID: #VU99005

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-2022-49003

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the nvme_mpath_revalidate_paths() function in drivers/nvme/host/multipath.c, within the nvme_ns_remove() function in drivers/nvme/host/core.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/787d81d4eb150e443e5d1276c6e8f03cfecc2302
https://git.kernel.org/stable/c/5b566d09ab1b975566a53f9c5466ee260d087582
https://git.kernel.org/stable/c/899d2a05dc14733cfba6224083c6b0dd5a738590

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.