CVE-2026-43012

{"id": "CVE-2026-43012", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43012", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:25:48.044257Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "de85624c623dbb5fdb3ae7b08b66894a072c0cc0", "lessThan": "2ebb13f3e8be0b61f72425b34cce60c8b6ad1891", "versionType": "git"}, {"status": "affected", "version": "2a4f56fbcc473d8faeb29b73082df39efbe5893c", "lessThan": "e27153b2bd6e6699b544ac4dfa35d167bed5e642", "versionType": "git"}, {"status": "affected", "version": "2a4f56fbcc473d8faeb29b73082df39efbe5893c", "lessThan": "4363698838b7ec6e8d85b179495889aa7e522f91", "versionType": "git"}, {"status": "affected", "version": "2a4f56fbcc473d8faeb29b73082df39efbe5893c", "lessThan": "403186400a1a6166efe7031edc549c15fee4723f", "versionType": "git"}, {"status": "affected", "version": "6.12.9", "lessThan": "6.12.81", "versionType": "semver"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"status": "unaffected", "version": "0", "lessThan": "6.13", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.81", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.22", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.12", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c"], "defaultStatus": "affected"}]}], "published": "2026-05-01T15:16:45.117", "references": [{"url": "https://git.kernel.org/stable/c/2ebb13f3e8be0b61f72425b34cce60c8b6ad1891", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/403186400a1a6166efe7031edc549c15fee4723f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4363698838b7ec6e8d85b179495889aa7e522f91", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e27153b2bd6e6699b544ac4dfa35d167bed5e642", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix switchdev mode rollback in case of failure\n\nIf for some internal reason switchdev mode fails, we rollback to legacy\nmode, before this patch, rollback will unregister the uplink netdev and\nleave it unregistered causing the below kernel bug.\n\nTo fix this, we need to avoid netdev unregister by setting the proper\nrollback flag 'MLX5_PRIV_FLAGS_SWITCH_LEGACY' to indicate legacy mode.\n\ndevlink (431) used greatest stack depth: 11048 bytes left\nmlx5_core 0000:00:03.0: E-Switch: Disable: mode(LEGACY), nvfs(0), \\\n\tnecvfs(0), active vports(0)\nmlx5_core 0000:00:03.0: E-Switch: Supported tc chains and prios offload\nmlx5_core 0000:00:03.0: Loading uplink representor for vport 65535\nmlx5_core 0000:00:03.0: mlx5_cmd_out_err:816:(pid 456): \\\n\tQUERY_HCA_CAP(0x100) op_mod(0x0) failed, \\\n\tstatus bad parameter(0x3), syndrome (0x3a3846), err(-22)\nmlx5_core 0000:00:03.0 enp0s3np0 (unregistered): Unloading uplink \\\n\trepresentor for vport 65535\n ------------[ cut here ]------------\nkernel BUG at net/core/dev.c:12070!\nOops: invalid opcode: 0000 [#1] SMP NOPTI\nCPU: 2 UID: 0 PID: 456 Comm: devlink Not tainted 6.16.0-rc3+ \\\n\t#9 PREEMPT(voluntary)\nRIP: 0010:unregister_netdevice_many_notify+0x123/0xae0\n...\nCall Trace:\n[ 90.923094] unregister_netdevice_queue+0xad/0xf0\n[ 90.923323] unregister_netdev+0x1c/0x40\n[ 90.923522] mlx5e_vport_rep_unload+0x61/0xc6\n[ 90.923736] esw_offloads_enable+0x8e6/0x920\n[ 90.923947] mlx5_eswitch_enable_locked+0x349/0x430\n[ 90.924182] ? is_mp_supported+0x57/0xb0\n[ 90.924376] mlx5_devlink_eswitch_mode_set+0x167/0x350\n[ 90.924628] devlink_nl_eswitch_set_doit+0x6f/0xf0\n[ 90.924862] genl_family_rcv_msg_doit+0xe8/0x140\n[ 90.925088] genl_rcv_msg+0x18b/0x290\n[ 90.925269] ? __pfx_devlink_nl_pre_doit+0x10/0x10\n[ 90.925506] ? __pfx_devlink_nl_eswitch_set_doit+0x10/0x10\n[ 90.925766] ? __pfx_devlink_nl_post_doit+0x10/0x10\n[ 90.926001] ? __pfx_genl_rcv_msg+0x10/0x10\n[ 90.926206] netlink_rcv_skb+0x52/0x100\n[ 90.926393] genl_rcv+0x28/0x40\n[ 90.926557] netlink_unicast+0x27d/0x3d0\n[ 90.926749] netlink_sendmsg+0x1f7/0x430\n[ 90.926942] __sys_sendto+0x213/0x220\n[ 90.927127] ? __sys_recvmsg+0x6a/0xd0\n[ 90.927312] __x64_sys_sendto+0x24/0x30\n[ 90.927504] do_syscall_64+0x50/0x1c0\n[ 90.927687] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 90.927929] RIP: 0033:0x7f7d0363e047"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/mlx5: Corregir la reversi\u00f3n del modo switchdev en caso de fallo\n\nSi por alguna raz\u00f3n interna el modo switchdev falla, volvemos al modo heredado; antes de este parche, la reversi\u00f3n anular\u00e1 el registro del netdev de enlace ascendente y lo dejar\u00e1 sin registrar, causando el siguiente error del kernel.\n\nPara corregir esto, necesitamos evitar la anulaci\u00f3n del registro del netdev estableciendo la bandera de reversi\u00f3n adecuada \u2019MLX5_PRIV_FLAGS_SWITCH_LEGACY\u2019 para indicar el modo heredado.\n\ndevlink (431) us\u00f3 la mayor profundidad de pila: 11048 bytes restantes\nmlx5_core 0000:00:03.0: E-Switch: Deshabilitar: modo(LEGACY), nvfs(0), \\\n\tnecvfs(0), vports activos(0)\nmlx5_core 0000:00:03.0: E-Switch: Descarga de cadenas tc y prios soportada\nmlx5_core 0000:00:03.0: Cargando representador de enlace ascendente para vport 65535\nmlx5_core 0000:00:03.0: mlx5_cmd_out_err:816:(pid 456): \\\n\tQUERY_HCA_CAP(0x100) op_mod(0x0) fall\u00f3, \\\n\testado par\u00e1metro incorrecto(0x3), s\u00edndrome (0x 3a3846), err(-22)\nmlx5_core 0000:00:03.0 enp0s3np0 (sin registrar): Descargando representador de enlace ascendente \\\n\tpara vport 65535\n - - - - - - - - - - - -[ cortar aqu\u00ed ]- - - - - - - - - - - -\nBUG del kernel en net/core/dev.c:12070!\nOops: c\u00f3digo de operaci\u00f3n inv\u00e1lido: 0000 [#1] SMP NOPTI\nCPU: 2 UID: 0 PID: 456 Comm: devlink No contaminado 6.16.0-rc3+ \\\n\t#9 PREEMPT(voluntario)\nRIP: 0010:unregister_netdevice_many_notify+0x123/0xae0\n...\nRastro de Llamada:\n[ 90.923094] unregister_netdevice_queue+0xad/0xf0\n[ 90.923323] unregister_netdev+0x1c/0x40\n[ 90.923522] mlx5e_vport_rep_unload+0x61/0xc6\n[ 90.923736] esw_offloads_enable+0x8e6/0x920\n[ 90.923947] mlx5_eswitch_enable_locked+0x349/0x430\n[ 90.924182] ? is_mp_supported+0x57/0xb0\n[ 90.924376] mlx5_devlink_eswitch_mode_set+0x167/0x350\n[ 90.924628] devlink_nl_eswitch_set_doit+0x6f/0xf0\n[ 90.924862] genl_family_rcv_msg_doit+0xe8/0x140\n[ 90.925088] genl_rcv_msg+0x18b/0x290\n[ 90.925269] ? __pfx_devlink_nl_pre_doit+0x10/0x10\n[ 90.925506] ? __pfx_devlink_nl_eswitch_set_doit+0x10/0x10\n[ 90.925766] ? __pfx_devlink_nl_post_doit+0x10/0x10\n[ 90.926001] ? __pfx_genl_rcv_msg+0x10/0x10\n[ 90.926206] netlink_rcv_skb+0x52/0x100\n[ 90.926393] genl_rcv+0x28/0x40\n[ 90.926557] netlink_unicast+0x27d/0x3d0\n[ 90.926749] netlink_sendmsg+0x1f7/0x430\n[ 90.926942] __sys_sendto+0x213/0x220\n[ 90.927127] ? __sys_recvmsg+0x6a/0xd0\n[ 90.927312] __x64_sys_sendto+0x24/0x30\n[ 90.927504] do_syscall_64+0x50/0x1c0\n[ 90.927687] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 90.927929] RIP: 0033:0x 7f7d0363e047"}], "lastModified": "2026-11-11T23:10:00.263", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "99AE3C0B-A94D-4AA6-A06E-F4B02F7EB95F", "versionEndExcluding": "6.12.81", "versionStartIncluding": "6.12.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8CBC12FA-A2A3-4882-BEB3-38ED3AC5AD57", "versionEndExcluding": "6.18.22", "versionStartIncluding": "6.13.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A3F9505-6B98-4269-8B81-127E55A1BF00"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5DFCDFB8-4FD0-465A-9076-D813D78FE51B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}