#VU94267 Improper locking in Linux kernel - CVE-2024-40995
Published: July 13, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU94267
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-2024-40995
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 tcf_idr_check_alloc() and rcu_read_unlock() functions in net/sched/act_api.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/0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74
- https://git.kernel.org/stable/c/c6a7da65a296745535a964be1019ec7691b0cb90
- https://git.kernel.org/stable/c/25987a97eec4d5f897cd04ee1b45170829c610da
- https://git.kernel.org/stable/c/6fc78d67f51aeb9a542d39a8714e16bc411582d4
- https://git.kernel.org/stable/c/5f926aa96b08b6c47178fe1171e7ae331c695fc2
- https://git.kernel.org/stable/c/7a0e497b597df7c4cf2b63fc6e9188b6cabe5335
- https://git.kernel.org/stable/c/d864319871b05fadd153e0aede4811ca7008f5d6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.221
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.162
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.279
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.96
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.36