GHSA-3CC5-5JG6-G6PX
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: bcmgenet: restore the hardware filters on open
bcmgenet_hfb_init() runs INIT_LIST_HEAD() on priv->rxnfc_list, which drops every rule off the list, and bcmgenet_open() calls it on each ifup. Every rule the user configured is silently lost:
# ethtool -N eth0 flow-type ether dst $MAC action 0 Added rule with ID 0 # ethtool -n eth0 | grep -c Filter: 1 # ip link set eth0 down && ip link set eth0 up # ethtool -n eth0 | grep -c Filter: 0
Initialise the lists once at probe and restore the rules on open, as bcmgenet_resume() already does.
{
"affected": [],
"aliases": [
"CVE-2026-98304"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-06T09:18:21Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: restore the hardware filters on open\n\nbcmgenet_hfb_init() runs INIT_LIST_HEAD() on priv-\u003erxnfc_list, which drops\nevery rule off the list, and bcmgenet_open() calls it on each ifup. Every\nrule the user configured is silently lost:\n\n # ethtool -N eth0 flow-type ether dst $MAC action 0\n Added rule with ID 0\n # ethtool -n eth0 | grep -c Filter:\n 1\n # ip link set eth0 down \u0026\u0026 ip link set eth0 up\n # ethtool -n eth0 | grep -c Filter:\n 0\n\nInitialise the lists once at probe and restore the rules on open, as\nbcmgenet_resume() already does.",
"id": "GHSA-3cc5-5jg6-g6px",
"modified": "2026-10-06T09:31:34Z",
"published": "2026-10-06T09:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98304"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/23ca4ddc4fce2c233a49e9fd34d4b5b02bd7324e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/56db7ec462d6a2b886e299ad835109c089606969"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/906140955c8debde65afe12e594e04c49a61b0d9"
}
],
"schema_version": "1.4.0",
"severity": []
}
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