SB20250226428 - NULL pointer dereference in Linux kernel net xen-netback driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226428
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-49649)
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.
References
- 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