net/mlx5e: Fix “scheduling while atomic” in IPsec MAC address query_CVE-2026-43199

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix \"scheduling while atomic\" in IPsec MAC address query\n\nFix a \"scheduling while atomic\" bug in mlx5e_ipsec_init_macs() by\nreplacing mlx5_query_mac_address() with ether_addr_copy() to get the\nlocal MAC address directly from netdev->dev_addr.\n\nThe issue occurs because mlx5_query_mac_address() queries the hardware\nwhich involves mlx5_cmd_exec() that can sleep, but it is called from\nthe mlx5e_ipsec_handle_event workqueue which runs in atomic context.\n\nThe MAC address is already available in netdev->dev_addr, so no need\nto query hardware. This avoids the sleeping call and resolves the bug.\n\nCall trace:\n  BUG: scheduling while atomic: kworker/u112:2/69344/0x00000200\n  __schedule+0x7ab/0xa20\n  schedule+0x1c/0xb0\n  schedule_timeout+0x6e/0xf0\n  __wait_for_common+0x91/0x1b0\n  cmd_exec+0xa85/0xff0 [mlx5_core]\n  mlx5_cmd_exec+0x1f/0x50 [mlx5_core]\n  mlx5_query_nic_vport_mac_address+0x7b/0xd0 [mlx5_core]\n  mlx5_query_mac_address+0x19/0x30 [mlx5_core]\n  mlx5e_ipsec_init_macs+0xc1/0x720 [mlx5_core]\n  mlx5e_ipsec_build_accel_xfrm_attrs+0x422/0x670 [mlx5_core]\n  mlx5e_ipsec_handle_event+0x2b9/0x460 [mlx5_core]\n  process_one_work+0x178/0x2e0\n  worker_thread+0x2ea/0x430",
    "published": "2026-05-06T11:28:06.232Z",
    "modified": "2026-05-08T12:41:11.576Z",
    "type": "cve",
    "title": "net/mlx5e: Fix \"scheduling while atomic\" in IPsec MAC address query",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/e1407fb7c337373dfaaae2445d828b0b9ae26a29\nhttps://git.kernel.org/stable/c/57957bc7f1865778ec9b1618e15515feb6df7eb4\nhttps://git.kernel.org/stable/c/546de94e41e92e1f7dc6213615fb7c794d05db98\nhttps://git.kernel.org/stable/c/859380694f434597407632c29f30fdb5e763e6cc",
    "id": "CVE-2026-43199",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux cee137a634318bfbda18ee5af45d300153b57fa5\nLinux Linux cee137a634318bfbda18ee5af45d300153b57fa5\nLinux Linux cee137a634318bfbda18ee5af45d300153b57fa5\nLinux Linux cee137a634318bfbda18ee5af45d300153b57fa5\nLinux Linux 6.2",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "cee137a634318bfbda18ee5af45d300153b57fa5",
    "vendor": "Linux",
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    "ai_score": 0
}