#VU108143 Memory leak in Linux kernel - CVE-2022-49871
Published: May 2, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108143
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-2022-49871
CWE-ID: CWE-401
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 memory leak within the local_bh_disable() function in drivers/net/tun.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/1118b2049d77ca0b505775fc1a8d1909cf19a7ec
- https://git.kernel.org/stable/c/223ef6a94e52331a6a7ef31e59921e0e82d2d40a
- https://git.kernel.org/stable/c/3401f964028ac941425b9b2c8ff8a022539ef44a
- https://git.kernel.org/stable/c/8b12a020b20a78f62bedc50f26db3bf4fadf8cb9
- https://git.kernel.org/stable/c/a4f73f6adc53fd7a3f9771cbc89a03ef39b0b755
- https://git.kernel.org/stable/c/d7569302a7a52a9305d2fb054df908ff985553bb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.79