GHSA-M87G-GJM6-7C8J
Vulnerability from github – Published: 2024-07-30 09:32 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: E-switch, Create ingress ACL when needed
Currently, ingress acl is used for three features. It is created only when vport metadata match and prio tag are enabled. But active-backup lag mode also uses it. It is independent of vport metadata match and prio tag. And vport metadata match can be disabled using the following devlink command:
# devlink dev param set pci/0000:08:00.0 name esw_port_metadata \ value false cmode runtime
If ingress acl is not created, will hit panic when creating drop rule for active-backup lag mode. If always create it, there will be about 5% performance degradation.
Fix it by creating ingress acl when needed. If esw_port_metadata is true, ingress acl exists, then create drop rule using existing ingress acl. If esw_port_metadata is false, create ingress acl and then create drop rule.
{
"affected": [],
"aliases": [
"CVE-2024-42142"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-30T08:15:05Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-switch, Create ingress ACL when needed\n\nCurrently, ingress acl is used for three features. It is created only\nwhen vport metadata match and prio tag are enabled. But active-backup\nlag mode also uses it. It is independent of vport metadata match and\nprio tag. And vport metadata match can be disabled using the\nfollowing devlink command:\n\n # devlink dev param set pci/0000:08:00.0 name esw_port_metadata \\\n\tvalue false cmode runtime\n\nIf ingress acl is not created, will hit panic when creating drop rule\nfor active-backup lag mode. If always create it, there will be about\n5% performance degradation.\n\nFix it by creating ingress acl when needed. If esw_port_metadata is\ntrue, ingress acl exists, then create drop rule using existing\ningress acl. If esw_port_metadata is false, create ingress acl and\nthen create drop rule.",
"id": "GHSA-m87g-gjm6-7c8j",
"modified": "2025-11-04T00:31:07Z",
"published": "2024-07-30T09:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42142"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3e3551f8702978cd2221d2614ca6d6727e785324"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/83bc1a129f7fd0d7d05036ceb7ee69102624e320"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b20c2fb45470d0c7a603613c9cfa5d45720e17f2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bc3ff8d3c05044de57865ebbb78cca8f7da3e595"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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