{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cee137a634318bfbda18ee5af45d300153b57fa5"
            },
            {
              "fixed": "e1407fb7c337373dfaaae2445d828b0b9ae26a29"
            },
            {
              "fixed": "57957bc7f1865778ec9b1618e15515feb6df7eb4"
            },
            {
              "fixed": "546de94e41e92e1f7dc6213615fb7c794d05db98"
            },
            {
              "fixed": "859380694f434597407632c29f30fdb5e763e6cc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43199.json"
  },
  "details": "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-\u003edev_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-\u003edev_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",
  "id": "CVE-2026-43199",
  "modified": "2026-07-08T05:38:37.077848696Z",
  "published": "2026-05-06T11:28:06.232Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/546de94e41e92e1f7dc6213615fb7c794d05db98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57957bc7f1865778ec9b1618e15515feb6df7eb4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/859380694f434597407632c29f30fdb5e763e6cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1407fb7c337373dfaaae2445d828b0b9ae26a29"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43199.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43199"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/mlx5e: Fix \"scheduling while atomic\" in IPsec MAC address query"
}