CVE-2024-50146

{"id": "CVE-2024-50146", "cveTags": [], "metrics": {"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}]}, "published": "2024-11-07T10:15:06.443", "references": [{"url": "https://git.kernel.org/stable/c/3955b77494c3c7d14873b1db67e7e00c46a714db", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4dbc1d1a9f39c3711ad2a40addca04d07d9ab5d0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Don't call cleanup on profile rollback failure\n\nWhen profile rollback fails in mlx5e_netdev_change_profile, the netdev\nprofile var is left set to NULL. Avoid a crash when unloading the driver\nby not calling profile->cleanup in such a case.\n\nThis was encountered while testing, with the original trigger that\nthe wq rescuer thread creation got interrupted (presumably due to\nCtrl+C-ing modprobe), which gets converted to ENOMEM (-12) by\nmlx5e_priv_init, the profile rollback also fails for the same reason\n(signal still active) so the profile is left as NULL, leading to a crash\nlater in _mlx5e_remove.\n\n [ 732.473932] mlx5_core 0000:08:00.1: E-Switch: Unload vfs: mode(OFFLOADS), nvfs(2), necvfs(0), active vports(2)\n [ 734.525513] workqueue: Failed to create a rescuer kthread for wq \"mlx5e\": -EINTR\n [ 734.557372] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init failed, err=-12\n [ 734.559187] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: new profile init failed, -12\n [ 734.560153] workqueue: Failed to create a rescuer kthread for wq \"mlx5e\": -EINTR\n [ 734.589378] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init failed, err=-12\n [ 734.591136] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12\n [ 745.537492] BUG: kernel NULL pointer dereference, address: 0000000000000008\n [ 745.538222] #PF: supervisor read access in kernel mode\n<snipped>\n [ 745.551290] Call Trace:\n [ 745.551590] <TASK>\n [ 745.551866] ? __die+0x20/0x60\n [ 745.552218] ? page_fault_oops+0x150/0x400\n [ 745.555307] ? exc_page_fault+0x79/0x240\n [ 745.555729] ? asm_exc_page_fault+0x22/0x30\n [ 745.556166] ? mlx5e_remove+0x6b/0xb0 [mlx5_core]\n [ 745.556698] auxiliary_bus_remove+0x18/0x30\n [ 745.557134] device_release_driver_internal+0x1df/0x240\n [ 745.557654] bus_remove_device+0xd7/0x140\n [ 745.558075] device_del+0x15b/0x3c0\n [ 745.558456] mlx5_rescan_drivers_locked.part.0+0xb1/0x2f0 [mlx5_core]\n [ 745.559112] mlx5_unregister_device+0x34/0x50 [mlx5_core]\n [ 745.559686] mlx5_uninit_one+0x46/0xf0 [mlx5_core]\n [ 745.560203] remove_one+0x4e/0xd0 [mlx5_core]\n [ 745.560694] pci_device_remove+0x39/0xa0\n [ 745.561112] device_release_driver_internal+0x1df/0x240\n [ 745.561631] driver_detach+0x47/0x90\n [ 745.562022] bus_remove_driver+0x84/0x100\n [ 745.562444] pci_unregister_driver+0x3b/0x90\n [ 745.562890] mlx5_cleanup+0xc/0x1b [mlx5_core]\n [ 745.563415] __x64_sys_delete_module+0x14d/0x2f0\n [ 745.563886] ? kmem_cache_free+0x1b0/0x460\n [ 745.564313] ? lockdep_hardirqs_on_prepare+0xe2/0x190\n [ 745.564825] do_syscall_64+0x6d/0x140\n [ 745.565223] entry_SYSCALL_64_after_hwframe+0x4b/0x53\n [ 745.565725] RIP: 0033:0x7f1579b1288b"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: No llamar a cleanup en caso de fallo en la reversi\u00f3n del perfil Cuando la reversi\u00f3n del perfil falla en mlx5e_netdev_change_profile, la variable de perfil netdev se deja establecida en NULL. Evite un bloqueo al descargar el controlador al no llamar a profile-&gt;cleanup en tal caso. Esto se encontr\u00f3 durante la prueba, con el disparador original de que la creaci\u00f3n del hilo wq rescuer se interrumpi\u00f3 (presumiblemente debido a Ctrl+C-ing modprobe), que se convierte a ENOMEM (-12) por mlx5e_priv_init, la reversi\u00f3n del perfil tambi\u00e9n falla por la misma raz\u00f3n (la se\u00f1al sigue activa) por lo que el perfil se deja como NULL, lo que lleva a un bloqueo m\u00e1s adelante en _mlx5e_remove. [ 732.473932] mlx5_core 0000:08:00.1: E-Switch: Descargar vfs: modo(OFFLOADS), nvfs(2), necvfs(0), vports(2) activos [ 734.525513] cola de trabajo: Error al crear un kthread de rescate para wq \"mlx5e\": -EINTR [ 734.557372] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init fall\u00f3, err=-12 [ 734.559187] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: nuevo Error en la inicializaci\u00f3n del perfil, -12 [734.560153] workqueue: Error al crear un kthread de rescate para wq \"mlx5e\": -EINTR [734.589378] mlx5_core 0000:08:00.1: mlx5e_netdev_init_profile:6235:(pid 6086): mlx5e_priv_init fall\u00f3, err=-12 [734.591136] mlx5_core 0000:08:00.1 eth3: mlx5e_netdev_change_profile: error al revertir al perfil original, -12 [745.537492] ERROR: desreferencia de puntero NULL del n\u00facleo, direcci\u00f3n: 0000000000000008 [745.538222] #PF: acceso de lectura del supervisor en modo kernel [ 745.551290] Seguimiento de llamadas: [ 745.551590] [ 745.551866] ? __die+0x20/0x60 [ 745.552218] ? page_fault_oops+0x150/0x400 [ 745.555307] ? exc_page_fault+0x79/0x240 [ 745.555729] ? asm_exc_page_fault+0x22/0x30 [ 745.556166] ? mlx5e_remove+0x6b/0xb0 [mlx5_core] [ 745.556698] bus_auxiliar_eliminar+0x18/0x30 [ 745.557134] dispositivo_liberaci\u00f3n_controlador_interno+0x1df/0x240 [ 745.557654] bus_eliminar_dispositivo+0xd7/0x140 [ 745.558075] dispositivo_del+0x15b/0x3c0 [ 745.558456] mlx5_rescan_drivers_locked.part.0+0xb1/0x2f0 [mlx5_core] [ 745.559112] mlx5_anular_registro_dispositivo+0x34/0x50 [mlx5_core] [ 745.559686] mlx5_uninit_one+0x46/0xf0 [mlx5_core] [ 745.560203] remove_one+0x4e/0xd0 [mlx5_core] [ 745.560694] pci_device_remove+0x39/0xa0 [ 745.561112] device_release_driver_internal+0x1df/0x240 [ 745.561631] driver_detach+0x47/0x90 [ 745.562022] bus_remove_driver+0x84/0x100 [ 745.562444] pci_unregister_driver+0x3b/0x90 [ 745.562890] mlx5_cleanup+0xc/0x1b [mlx5_core] [ 745.563415] __x64_sys_delete_module+0x14d/0x2f0 [ 745.563886] ? kmem_cache_free+0x1b0/0x460 [ 745.564313] ? lockdep_hardirqs_on_prepare+0xe2/0x190 [ 745.564825] hacer_syscall_64+0x6d/0x140 [ 745.565223] entrada_SYSCALL_64_after_hwframe+0x4b/0x53 [ 745.565725] RIP: 0033:0x7f1579b1288b"}], "lastModified": "2024-11-18T21:17:20.177", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "57E1EEE2-5A95-4D82-A91E-E2EB6C4FAE46", "versionEndExcluding": "6.11.6", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}