{"id":"CVE-2026-43199","revision":"1d659b6f15674c2b844744c674c22ecd","records":[{"revision":"1d659b6f15674c2b844744c674c22ecd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43199","aliases":[],"title":"net/mlx5e: Fix \"scheduling while atomic\" in IPsec MAC address query","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","state":0,"publishedAt":"2026-05-06T11:28:06.232+00:00","modifiedAt":"2026-10-21T12:40:17.684+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"cee137a634318bfbda18ee5af45d300153b57fa5\",\n                            \"lessThan\": \"5efde07521309274f26727860774614cbc187242\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cee137a634318bfbda18ee5af45d300153b57fa5\",\n                            \"lessThan\": \"e1407fb7c337373dfaaae2445d828b0b9ae26a29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cee137a634318bfbda18ee5af45d300153b57fa5\",\n                            \"lessThan\": \"57957bc7f1865778ec9b1618e15515feb6df7eb4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cee137a634318bfbda18ee5af45d300153b57fa5\",\n                            \"lessThan\": \"546de94e41e92e1f7dc6213615fb7c794d05db98\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cee137a634318bfbda18ee5af45d300153b57fa5\",\n                            \"lessThan\": \"859380694f434597407632c29f30fdb5e763e6cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.75\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.16\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.6\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/5efde07521309274f26727860774614cbc187242","https://git.kernel.org/stable/c/e1407fb7c337373dfaaae2445d828b0b9ae26a29","https://git.kernel.org/stable/c/57957bc7f1865778ec9b1618e15515feb6df7eb4","https://git.kernel.org/stable/c/546de94e41e92e1f7dc6213615fb7c794d05db98","https://git.kernel.org/stable/c/859380694f434597407632c29f30fdb5e763e6cc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43199","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43199","identifiers":["CVE-2026-43199"]},"retained":false,"historicalAffected":[]}],"coverage":[]}