#VU105149 Improper locking in Linux kernel - CVE-2025-21823
Published: February 28, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105149
Vulnerability risk: Low
CVSSv4.0: 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-2025-21823
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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 batadv_v_elp_start_timer(), batadv_v_elp_get_throughput(), batadv_v_elp_throughput_metric_update(), batadv_v_elp_wifi_neigh_probe() and batadv_v_elp_periodic_work() functions in net/batman-adv/bat_v_elp.c, within the batadv_v_hardif_neigh_init() function in net/batman-adv/bat_v.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/0fdc3c166ac17b26014313fa2b93696354511b24
- https://git.kernel.org/stable/c/781a06fd265a8151f7601122d9c2e985663828ff
- https://git.kernel.org/stable/c/8c8ecc98f5c65947b0070a24bac11e12e47cc65d
- https://git.kernel.org/stable/c/a7aa2317285806640c844acd4cd2cd768e395264
- https://git.kernel.org/stable/c/af264c2a9adc37f4bdf88ca7f3affa15d8c7de9e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.4