GHSA-2GFH-V7WP-GCG2
Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_api: release tail references on DELACTION failure
A batched RTM_DELACTION request takes a temporary reference on each action before attempting any deletion. tcf_action_delete() clears each processed slot and drops its temporary reference before attempting the deletion. If deletion fails, tca_action_gd() calls tcf_action_put_many() to release the remaining references, but its tcf_act_for_each_action() iterator stops at the first NULL slot.
When a batch stops at an action bound to a filter, this leaks a reference on each subsequent action. A later delete of an unbound action can then return success without removing it from the IDR.
Walk the full array in tcf_action_put_many() and skip NULL slots to release the references held on the unprocessed actions.
{
"affected": [],
"aliases": [
"CVE-2026-98235"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-06T09:18:11Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_api: release tail references on DELACTION failure\n\nA batched RTM_DELACTION request takes a temporary reference on each\naction before attempting any deletion. tcf_action_delete() clears\neach processed slot and drops its temporary reference before attempting\nthe deletion. If deletion fails, tca_action_gd() calls\ntcf_action_put_many() to release the remaining references, but its\ntcf_act_for_each_action() iterator stops at the first NULL slot.\n\nWhen a batch stops at an action bound to a filter, this leaks a\nreference on each subsequent action. A later delete of an unbound\naction can then return success without removing it from the IDR.\n\nWalk the full array in tcf_action_put_many() and skip NULL slots to\nrelease the references held on the unprocessed actions.",
"id": "GHSA-2gfh-v7wp-gcg2",
"modified": "2026-10-06T09:31:31Z",
"published": "2026-10-06T09:31:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98235"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1be63e4579af408d596f0f3165faf1a880631d3b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/57b477e46ef2df3483f3488cc713c61c4b384aab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6e05e46fa821a5c1b281355f1f622ac76cb6080a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9eaba16f1b6ee19b249e6afd82c27f958d441458"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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