hsr: broadcast netlink notifications in the device's net namespace
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. 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().
CVE-2026-97419
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-97419
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"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",
"lessThan": "798ccb12810a58a37264685b28ddf990ef49559c",
"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "9bf45feee630be868ab54e3d0f3d430c07471f0e",
"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "016b8eaca53bfd57e84ea28b5c9174c89d7679e1",
"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "25b69f281cebe051a8e4ab19950a939c27ead1bc",
"versionType": "git"
},
{
"status": "affected",
"version": "f421436a591d34fa5279b54a96ac07d70250cc8d",
"lessThan": "24b3f1a9982c176d05a523a4bb9314dca0db4488",
"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"
}
]- Related CVEs
- CVE-2026-97419
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #8310 · Revision 1
- Added to Heist Feed
- Publisher date