linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: net: fix potential refcount leak in ndisc_router_discovery() The issue happens on specific paths in the function. After both the object `rt` and `neigh` are grabbed successfully, when `lifetime` is nonzero but the metric needs change, the function just deletes the route and set `rt` to NULL. Then, it may try grabbing `rt` and `neigh` again if above conditions hold. The function simply overwrite `neigh` if succeeds or returns if fails, without decreasing the reference count of previous `neigh`. This may result in memory leaks. Fix it by decrementing the reference count of `neigh` in place.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 6.0.2-1
- CVEs
- CVE-2022-50043
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:45 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: net: fix potential refcount leak in ndisc_router_discovery() The issue happens on specific paths in the function. After both the object `rt` and `neigh` are grabbed successfully, when `lifetime` is nonzero but the metric needs change, the function just deletes the route and set `rt` to NULL. Then, it may try grabbing `rt` and `neigh` again if above conditions hold. The function simply overwrite `neigh` if succeeds or returns if fails, without decreasing the reference count of previous `neigh`. This may result in memory leaks. Fix it by decrementing the reference count of `neigh` in place.
osv:DEBIAN-CVE-2022-50043
linux
Fixed versions: 6.0.2-1
linux
Fixed versions: 6.0.2-1
linux
Fixed versions: 6.0.2-1
Complete source record
{
"id": "8fd45433909354bcccdf46fb9968119f119bc07911d68ce4a14bcc9a423a0bf2",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-50043",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-50043",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: fix potential refcount leak in ndisc_router_discovery() The issue happens on specific paths in the function. After both the object `rt` and `neigh` are grabbed successfully, when `lifetime` is nonzero but the metric needs change, the function just deletes the route and set `rt` to NULL. Then, it may try grabbing `rt` and `neigh` again if above conditions hold. The function simply overwrite `neigh` if succeeds or returns if fails, without decreasing the reference count of previous `neigh`. This may result in memory leaks. Fix it by decrementing the reference count of `neigh` in place.",
"evidence": "osv:DEBIAN-CVE-2022-50043",
"products": [
{
"name": {
"value": "linux",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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},
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{
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],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2022-50043",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
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{
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"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50043.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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],
"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50043.json"
},
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},
{
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],
"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50043.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:03:15.340357940Z",
"provider": "osv",
"upstream": [
"CVE-2022-50043"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-50043"
]
},
"related_cves": [
{
"value": "CVE-2022-50043",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 325883,
"published_at": "2025-06-18T11:15:32.787+00:00"
}