Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.9, < 5.15.54 |
References
- https://git.kernel.org/stable/c/188c798f3c2554fa0d7147e9b97baf144b817019Patch
- https://git.kernel.org/stable/c/1993f5a06736ada59dd54b50dc96755a38796ee5Patch
- https://git.kernel.org/stable/c/386228c694bf1e7a7688e44412cb33500b0ac585Patch
FAQ
What is CVE-2022-49654?
CVE-2022-49654 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 cor...
How severe is CVE-2022-49654?
CVE-2022-49654 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49654?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.