CVE-2025-39872 (GCVE-0-2025-39872)
Vulnerability from cvelistv5 – Published: 2025-09-23 06:00 – Updated: 2026-01-08 09:50
VLAI?
Title
hsr: hold rcu and dev lock for hsr_get_port_ndev
Summary
In the Linux kernel, the following vulnerability has been resolved:
hsr: hold rcu and dev lock for hsr_get_port_ndev
hsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock.
On the other hand, before return the port device, we need to hold the
device reference to avoid UaF in the caller function.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
ef964411c8ca775967355d855abc56aeaca3c867 , < 9433ba79c2ec3ec7c9a711748701549339c3438c
(git)
Affected: 9c10dd8eed74de9e8adeb820939f8745cd566d4a , < 68a6729afd3e8e9a2a32538642ce92b96ccf9b1d (git) Affected: 9c10dd8eed74de9e8adeb820939f8745cd566d4a , < 847748fc66d08a89135a74e29362a66ba4e3ab15 (git) |
||
{
"containers": {
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"affected": [
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"product": "Linux",
"programFiles": [
"drivers/net/ethernet/ti/icssg/icssg_prueth.c",
"net/hsr/hsr_device.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versions": [
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{
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"versionType": "git"
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"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "6.14"
},
{
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"status": "unaffected",
"version": "0",
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{
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"status": "unaffected",
"version": "6.12.64",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "6.16.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
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"versionStartIncluding": "6.12.63",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhsr: hold rcu and dev lock for hsr_get_port_ndev\n\nhsr_get_port_ndev calls hsr_for_each_port, which need to hold rcu lock.\nOn the other hand, before return the port device, we need to hold the\ndevice reference to avoid UaF in the caller function."
}
],
"providerMetadata": {
"dateUpdated": "2026-01-08T09:50:16.213Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/9433ba79c2ec3ec7c9a711748701549339c3438c"
},
{
"url": "https://git.kernel.org/stable/c/68a6729afd3e8e9a2a32538642ce92b96ccf9b1d"
},
{
"url": "https://git.kernel.org/stable/c/847748fc66d08a89135a74e29362a66ba4e3ab15"
}
],
"title": "hsr: hold rcu and dev lock for hsr_get_port_ndev",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-39872",
"datePublished": "2025-09-23T06:00:45.528Z",
"dateReserved": "2025-04-16T07:20:57.144Z",
"dateUpdated": "2026-01-08T09:50:16.213Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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