#VU104610 NULL pointer dereference in Linux kernel - CVE-2022-49649
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104610
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-2022-49649
CWE-ID: CWE-476
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 NULL pointer dereference within the xenvif_rx_action() function in drivers/net/xen-netback/rx.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/5a071aefd6414af5a20321ab58a0557b81993687
- https://git.kernel.org/stable/c/7425479d20f9e96f7c3ec8e8a93fe0d7478724cb
- https://git.kernel.org/stable/c/94e8100678889ab428e68acadf042de723f094b9
- https://git.kernel.org/stable/c/b99174ac57fe5d8867448c03b23828e63f24cb1c
- https://git.kernel.org/stable/c/b9c32a6886af79d6e0ad87a7b01800ed079cdd02
- https://git.kernel.org/stable/c/c0fcceb5f3f1ec197c014fe218c2f28108cacd27
- https://git.kernel.org/stable/c/d5320c6a27aa975aff740f9cb481dcbde48f4348
- https://git.kernel.org/stable/c/f0b5c819b062df8bf5f2acf4697e3871cb3722da
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.13