linux — security advisory
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.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.18.14-1
- CVEs
- CVE-2022-49654
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:26 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2022-49654
linux
Fixed versions: 5.18.14-1
linux
Fixed versions: 5.18.14-1
linux
Fixed versions: 5.18.14-1
Complete source record
{
"id": "5317690e8332fbbe923a473adc16cd7d551c0ef475133a8aa4088a72d3746816",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-49654",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-49654",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2022-49654",
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}
],
"modified": "2026-10-15T08:02:59.384522373Z",
"provider": "osv",
"upstream": [
"CVE-2022-49654"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-49654"
]
},
"related_cves": [
{
"value": "CVE-2022-49654",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324850,
"published_at": "2025-02-26T07:01:40.51+00:00"
}