Resource management error in Linux kernel - CVE-2022-49856
Published: May 2, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108373
CSH Severity: Low
CVSS v4.0: 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-2022-49856
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the skb_headlen() function in drivers/net/tun.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-49856
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/07d120aa33cc9d9115753d159f64d20c94458781
- https://git.kernel.org/stable/c/30b0263d0366ea63aa7cad0407dfd945cc348580
- https://git.kernel.org/stable/c/310f0855352ee4b2eb38855c99185c23e6e1496b
- https://git.kernel.org/stable/c/534762e261c84d43e5d56a780e40278b94c20540
- https://git.kernel.org/stable/c/9132fa043f96ac545254ab326db5c6fd47d54acb
- https://git.kernel.org/stable/c/999550c8cbb3fcb535f542d652fe1cb936839e5f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.9