#VU111444 Use-after-free in Linux kernel - CVE-2022-49934

Cybersecurity Help s.r.o.

Published: 2025-06-19 | Updated: 2025-06-21

Vulnerability identifier: #VU111444

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49934

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the __ieee80211_scan_completed() function in net/mac80211/scan.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: 4.14, 4.14.0, 4.14.0 rc1, 4.14.1, 4.14.2, 4.14.3, 4.14.4, 4.14.5, 4.14.6, 4.14.7, 4.14.8, 4.14.9, 4.14.10, 4.14.11, 4.14.12, 4.14.13, 4.14.14, 4.14.15, 4.14.16, 4.14.17, 4.14.18, 4.14.19, 4.14.20, 4.14.21, 4.14.22, 4.14.23, 4.14.24, 4.14.25, 4.14.26, 4.14.27, 4.14.28, 4.14.29, 4.14.30, 4.14.31, 4.14.32, 4.14.33, 4.14.34, 4.14.35, 4.14.36, 4.14.37, 4.14.38, 4.14.39, 4.14.40, 4.14.41, 4.14.42, 4.14.43, 4.14.44, 4.14.45, 4.14.46, 4.14.47, 4.14.48, 4.14.49, 4.14.50, 4.14.51, 4.14.52, 4.14.53, 4.14.54, 4.14.55, 4.14.56, 4.14.57, 4.14.58, 4.14.59, 4.14.60, 4.14.61, 4.14.62, 4.14.63, 4.14.64, 4.14.65, 4.14.66, 4.14.67, 4.14.68, 4.14.69, 4.14.70, 4.14.71, 4.14.72, 4.14.73, 4.14.74, 4.14.75, 4.14.76, 4.14.77, 4.14.78, 4.14.79, 4.14.80, 4.14.81, 4.14.82, 4.14.83, 4.14.84, 4.14.85, 4.14.86, 4.14.87, 4.14.88, 4.14.89, 4.14.90, 4.14.91, 4.14.92, 4.14.93, 4.14.94, 4.14.95, 4.14.96, 4.14.97, 4.14.98, 4.14.99, 4.14.100, 4.14.101, 4.14.102, 4.14.103, 4.14.104, 4.14.105, 4.14.106, 4.14.107, 4.14.108, 4.14.109, 4.14.110, 4.14.111, 4.14.112, 4.14.113, 4.14.114, 4.14.115, 4.14.116, 4.14.117, 4.14.118, 4.14.119, 4.14.120, 4.14.121, 4.14.122, 4.14.123, 4.14.124, 4.14.125, 4.14.126, 4.14.127, 4.14.128, 4.14.129, 4.14.130, 4.14.131, 4.14.132, 4.14.133, 4.14.134, 4.14.135, 4.14.136, 4.14.137, 4.14.138, 4.14.139, 4.14.140, 4.14.141, 4.14.142, 4.14.143, 4.14.144, 4.14.145, 4.14.146, 4.14.147, 4.14.148, 4.14.149, 4.14.150, 4.14.151, 4.14.152, 4.14.153, 4.14.154, 4.14.155, 4.14.156, 4.14.157, 4.14.158, 4.14.159, 4.14.160, 4.14.161, 4.14.162, 4.14.163, 4.14.164, 4.14.165, 4.14.166, 4.14.167, 4.14.168, 4.14.169, 4.14.170, 4.14.171, 4.14.172, 4.14.173, 4.14.174, 4.14.175, 4.14.176, 4.14.177, 4.14.178, 4.14.179, 4.14.180, 4.14.181, 4.14.182, 4.14.183, 4.14.184, 4.14.185, 4.14.186, 4.14.187, 4.14.188, 4.14.189, 4.14.190, 4.14.191, 4.14.192, 4.14.193, 4.14.194, 4.14.195, 4.14.196, 4.14.197, 4.14.198, 4.14.199, 4.14.200, 4.14.201, 4.14.202, 4.14.203, 4.14.204, 4.14.205, 4.14.206, 4.14.207, 4.14.208, 4.14.209, 4.14.210, 4.14.211, 4.14.212, 4.14.213, 4.14.214, 4.14.215, 4.14.216, 4.14.217, 4.14.218, 4.14.219, 4.14.220, 4.14.221, 4.14.222, 4.14.223, 4.14.224, 4.14.225, 4.14.226, 4.14.227, 4.14.228, 4.14.229, 4.14.230, 4.14.231, 4.14.232, 4.14.233, 4.14.234, 4.14.235, 4.14.236, 4.14.237, 4.14.238, 4.14.239, 4.14.240, 4.14.241, 4.14.242, 4.14.243, 4.14.244, 4.14.245, 4.14.246, 4.14.247, 4.14.248, 4.14.249, 4.14.250, 4.14.251, 4.14.252, 4.14.253, 4.14.254, 4.14.255, 4.14.256, 4.14.257, 4.14.258, 4.14.259, 4.14.260, 4.14.261, 4.14.262, 4.14.263, 4.14.264, 4.14.265, 4.14.266, 4.14.267, 4.14.268, 4.14.269, 4.14.270, 4.14.271, 4.14.272, 4.14.273, 4.14.274, 4.14.275, 4.14.276, 4.14.277, 4.14.278, 4.14.279, 4.14.280, 4.14.281, 4.14.282, 4.14.283, 4.14.284, 4.14.285, 4.14.286, 4.14.287, 4.14.288, 4.14.289, 4.14.290, 4.14.291, 4.14.292, 4.14.293, 4.14.294

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.

Latest bulletins with this vulnerability

openEuler 20.03 LTS SP4 update for kernel

Use-after-free in Linux kernel mac80211