ghsa-677f-c75x-79m2
Vulnerability from github
Published
2025-05-26 15:30
Modified
2025-06-04 15:30
VLAI Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
net_sched: Flush gso_skb list too during ->change()
Previously, when reducing a qdisc's limit via the ->change() operation, only the main skb queue was trimmed, potentially leaving packets in the gso_skb list. This could result in NULL pointer dereference when we only check sch->limit against sch->q.qlen.
This patch introduces a new helper, qdisc_dequeue_internal(), which ensures both the gso_skb list and the main queue are properly flushed when trimming excess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie) are updated to use this helper in their ->change() routines.
{
"affected": [],
"aliases": [
"CVE-2025-37992"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-26T15:15:19Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: Flush gso_skb list too during -\u003echange()\n\nPreviously, when reducing a qdisc\u0027s limit via the -\u003echange() operation, only\nthe main skb queue was trimmed, potentially leaving packets in the gso_skb\nlist. This could result in NULL pointer dereference when we only check\nsch-\u003elimit against sch-\u003eq.qlen.\n\nThis patch introduces a new helper, qdisc_dequeue_internal(), which ensures\nboth the gso_skb list and the main queue are properly flushed when trimming\nexcess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie)\nare updated to use this helper in their -\u003echange() routines.",
"id": "GHSA-677f-c75x-79m2",
"modified": "2025-06-04T15:30:29Z",
"published": "2025-05-26T15:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37992"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ea1132ccb112f51ba749c56a912f67970c2cd542"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76"
}
],
"schema_version": "1.4.0",
"severity": []
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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