#VU104703 Improper locking in Linux kernel - CVE-2022-49123

Vulnerability identifier: #VU104703

Vulnerability 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-2022-49123

CWE-ID: CWE-667

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 improper locking within the ath11k_mac_mgmt_tx() function in drivers/net/wireless/ath/ath11k/mac.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.17, 5.17 rc1, 5.17 rc2, 5.17 rc3, 5.17 rc4, 5.17 rc5, 5.17 rc6, 5.17 rc7, 5.17 rc8, 5.17 rc9, 5.17 rc12, 5.17.1, 5.17.2

---

External links
https://git.kernel.org/stable/c/261b07519518bd14cb168b287b17e1d195f8d0c8
https://git.kernel.org/stable/c/33e723dc054edfc94da90eecca3b72cb424ce4a3
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3

---

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.