CVE-2026-97419
In the Linux kernel, the following vulnerability has been resolved:
hsr: broadcast netlink notifications in the device's net namespace
The HSR generic netlink family sets .netnsok = true. HSR devices can live in network namespaces other than init_net.
Two async notifiers broadcast events with genlmsg_multicast(). They are hsr_nl_ringerror() and hsr_nl_nodedown(). That helper delivers only on the default genl socket in init_net. So the events always land in init_net. The network namespace of the device does not matter.
This has two effects. A listener in the device's own namespace never sees its own ring error and node down events.
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A privileged listener in init_net receives events from HSR devices in other namespaces. The payload carries the peer node MAC (HSR_A_NODE_ADDR) and the slave port ifindex (HSR_A_IFINDEX).
Switch both callers to genlmsg_multicast_netns(). Other families with .netnsok = true already do this. Examples are gtp, ovpn, team, batman-adv, netdev-genl, ethtool and handshake.
hsr_nl_ringerror() already has the slave port. It uses dev_net(port->dev). hsr_nl_nodedown() takes the namespace from the master port via hsr_port_get_hsr().
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.17%
- Percentil entre todas las CVEs puntuadas: 6
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/016b8eaca53bfd57e84ea28b5c9174c89d7679e1
- https://git.kernel.org/stable/c/24b3f1a9982c176d05a523a4bb9314dca0db4488
- https://git.kernel.org/stable/c/25b69f281cebe051a8e4ab19950a939c27ead1bc
- https://git.kernel.org/stable/c/798ccb12810a58a37264685b28ddf990ef49559c
- https://git.kernel.org/stable/c/9bf45feee630be868ab54e3d0f3d430c07471f0e
- https://git.kernel.org/stable/c/9f13023607f1e95bd098cc49052b0c8955d334f9
- https://git.kernel.org/stable/c/a762fabd7ef9a6cc07258684138f9c3f078d0326
JSON original (NVD)
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{
"id": "CVE-2026-97419",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "9f13023607f1e95bd098cc49052b0c8955d334f9",
"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
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"versionType": "git"
},
{
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"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
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"versionType": "git"
},
{
"status": "affected",
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"lessThan": "25b69f281cebe051a8e4ab19950a939c27ead1bc",
"versionType": "git"
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{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
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"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "a762fabd7ef9a6cc07258684138f9c3f078d0326",
"versionType": "git"
}
],
"programFiles": [
"net/hsr/hsr_netlink.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/hsr/hsr_netlink.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-24T17:17:19.733",
"references": [
{
"url": "https://git.kernel.org/stable/c/016b8eaca53bfd57e84ea28b5c9174c89d7679e1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/24b3f1a9982c176d05a523a4bb9314dca0db4488",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/798ccb12810a58a37264685b28ddf990ef49559c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9bf45feee630be868ab54e3d0f3d430c07471f0e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9f13023607f1e95bd098cc49052b0c8955d334f9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a762fabd7ef9a6cc07258684138f9c3f078d0326",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhsr: broadcast netlink notifications in the device's net namespace\n\nThe HSR generic netlink family sets .netnsok = true. HSR devices can\nlive in network namespaces other than init_net.\n\nTwo async notifiers broadcast events with genlmsg_multicast(). They\nare hsr_nl_ringerror() and hsr_nl_nodedown(). That helper delivers\nonly on the default genl socket in init_net. So the events always land\nin init_net. The network namespace of the device does not matter.\n\nThis has two effects. A listener in the device's own namespace never\nsees its own ring error and node down events. A privileged listener in\ninit_net receives events from HSR devices in other namespaces. The\npayload carries the peer node MAC (HSR_A_NODE_ADDR) and the slave port\nifindex (HSR_A_IFINDEX).\n\nSwitch both callers to genlmsg_multicast_netns(). Other families with\n.netnsok = true already do this. Examples are gtp, ovpn, team,\nbatman-adv, netdev-genl, ethtool and handshake.\n\nhsr_nl_ringerror() already has the slave port. It uses\ndev_net(port->dev). hsr_nl_nodedown() takes the namespace from the\nmaster port via hsr_port_get_hsr()."
}
],
"lastModified": "2026-10-03T11:17:54.000",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}