CVE-2022-49654

In the Linux kernel, the following vulnerability has been resolved: net: dsa: qca8k: reset cpu port on MTU change It was discovered that the Documentation lacks of a fundamental detail on how to correctly change the MAX_FRAME_SIZE of the switch. In fact if the MAX_FRAME_SIZE is changed while the cpu port is on, the switch panics and cease to send any packet. This cause the mgmt ethernet system to not receive any packet (the slow fallback still works) and makes the device not reachable. To recover from this a switch reset is required. To correctly handle this, turn off the cpu ports before changing the MAX_FRAME_SIZE and turn on again after the value is applied.

The following products are affected by CVE-2022-49654 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49654.

URL	Resource
https://git.kernel.org/stable/c/188c798f3c2554fa0d7147e9b97baf144b817019
https://git.kernel.org/stable/c/1993f5a06736ada59dd54b50dc96755a38796ee5
https://git.kernel.org/stable/c/386228c694bf1e7a7688e44412cb33500b0ac585
https://lore.kernel.org/linux-cve-announce/2025022621-CVE-2022-49654-4ed4@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49654
https://www.cve.org/CVERecord?id=CVE-2022-49654