CVE-2022-49654
MEDIUM EPSS 14.6%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
14.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Affected Products 5
References 3
- git.kernel.org https://git.kernel.org/stable/c/188c798f3c2554fa0d7147e9b97baf144b817019
- git.kernel.org https://git.kernel.org/stable/c/1993f5a06736ada59dd54b50dc96755a38796ee5
- git.kernel.org https://git.kernel.org/stable/c/386228c694bf1e7a7688e44412cb33500b0ac585
Remediation
- git.kernel.org https://git.kernel.org/stable/c/188c798f3c2554fa0d7147e9b97baf144b817019
- git.kernel.org https://git.kernel.org/stable/c/1993f5a06736ada59dd54b50dc96755a38796ee5
- git.kernel.org https://git.kernel.org/stable/c/386228c694bf1e7a7688e44412cb33500b0ac585