#VU108224 Use-after-free in Linux kernel - CVE-2022-49840
Published: May 2, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108224
Vulnerability risk: Low
CVSSv4.0: 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-2022-49840
CWE-ID: CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the bpf_test_init() function in net/bpf/test_run.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/047824a730699c6c66df43306b80f700c9dfc2fd
- https://git.kernel.org/stable/c/1b597f2d6a55e9f549989913860ad5170da04964
- https://git.kernel.org/stable/c/730fb1ef974a13915bc7651364d8b3318891cd70
- https://git.kernel.org/stable/c/7a704dbfd3735304e261f2787c52fbc7c3884736
- https://git.kernel.org/stable/c/d3fd203f36d46aa29600a72d57a1b61af80e4a25
- https://git.kernel.org/stable/c/e60f37a1d379c821c17b08f366412dce9ef3d99f
- https://git.kernel.org/stable/c/eaa8edd86514afac9deb9bf9a5053e74f37edf40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80