CVE-2022-49015

A flaw was found in the Linux kernel's High-availability Seamless Redundancy (HSR) networking component. This vulnerability involves a use-after-free error where a network packet's data structure (skb) can be prematurely freed. If the system attempts to access this freed memory, it can lead to a system crash, resulting in a Denial of Service (DoS).

This issue is considered to be a moderate impact flaw, as the reproduction for this seems only to cause a DOS.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the hsr kernel module from loading. Create a file named /etc/modprobe.d/blacklist-hsr.conf with the following content: blacklist hsr After creating the file, regenerate the initramfs and reboot the system for the changes to take effect: dracut -f -v reboot Disabling the hsr module may impact systems that rely on High-availability Seamless Redundancy networking.