CVE-2024-50296

{"id": "CVE-2024-50296", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "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}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "2024-11-19T02:16:31.780", "references": [{"url": "https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hns3: fix kernel crash when uninstalling driver\n\nWhen the driver is uninstalled and the VF is disabled concurrently, a\nkernel crash occurs. The reason is that the two actions call function\npci_disable_sriov(). The num_VFs is checked to determine whether to\nrelease the corresponding resources. During the second calling, num_VFs\nis not 0 and the resource release function is called. However, the\ncorresponding resource has been released during the first invoking.\nTherefore, the problem occurs:\n\n[15277.839633][T50670] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n...\n[15278.131557][T50670] Call trace:\n[15278.134686][T50670] klist_put+0x28/0x12c\n[15278.138682][T50670] klist_del+0x14/0x20\n[15278.142592][T50670] device_del+0xbc/0x3c0\n[15278.146676][T50670] pci_remove_bus_device+0x84/0x120\n[15278.151714][T50670] pci_stop_and_remove_bus_device+0x6c/0x80\n[15278.157447][T50670] pci_iov_remove_virtfn+0xb4/0x12c\n[15278.162485][T50670] sriov_disable+0x50/0x11c\n[15278.166829][T50670] pci_disable_sriov+0x24/0x30\n[15278.171433][T50670] hnae3_unregister_ae_algo_prepare+0x60/0x90 [hnae3]\n[15278.178039][T50670] hclge_exit+0x28/0xd0 [hclge]\n[15278.182730][T50670] __se_sys_delete_module.isra.0+0x164/0x230\n[15278.188550][T50670] __arm64_sys_delete_module+0x1c/0x30\n[15278.193848][T50670] invoke_syscall+0x50/0x11c\n[15278.198278][T50670] el0_svc_common.constprop.0+0x158/0x164\n[15278.203837][T50670] do_el0_svc+0x34/0xcc\n[15278.207834][T50670] el0_svc+0x20/0x30\n\nFor details, see the following figure.\n\n rmmod hclge disable VFs\n----------------------------------------------------\nhclge_exit() sriov_numvfs_store()\n ... device_lock()\n pci_disable_sriov() hns3_pci_sriov_configure()\n pci_disable_sriov()\n sriov_disable()\n sriov_disable() if !num_VFs :\n if !num_VFs : return;\n return; sriov_del_vfs()\n sriov_del_vfs() ...\n ... klist_put()\n klist_put() ...\n ... num_VFs = 0;\n num_VFs = 0; device_unlock();\n\nIn this patch, when driver is removing, we get the device_lock()\nto protect num_VFs, just like sriov_numvfs_store()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: hns3: se corrige el fallo del kernel al desinstalar el controlador Cuando se desinstala el controlador y se deshabilita el VF al mismo tiempo, se produce un fallo del kernel. La raz\u00f3n es que las dos acciones llaman a la funci\u00f3n pci_disable_sriov(). Se comprueba num_VFs para determinar si se deben liberar los recursos correspondientes. Durante la segunda llamada, num_VFs no es 0 y se llama a la funci\u00f3n de liberaci\u00f3n de recursos. Sin embargo, el recurso correspondiente se ha liberado durante la primera invocaci\u00f3n. Por lo tanto, se produce el problema: [15277.839633][T50670] No se puede manejar la desreferencia del puntero NULL del n\u00facleo en la direcci\u00f3n virtual 0000000000000020 ... [15278.131557][T50670] Rastreo de llamadas: [15278.134686][T50670] klist_put+0x28/0x12c [15278.138682][T50670] klist_del+0x14/0x20 [15278.142592][T50670] device_del+0xbc/0x3c0 [15278.146676][T50670] pci_remove_bus_device+0x84/0x120 [15278.151714][T50670] pci_detener_y_eliminar_dispositivo_bus+0x6c/0x80 [15278.157447][T50670] pci_iov_eliminar_virtfn+0xb4/0x12c [15278.162485][T50670] sriov_deshabilitar+0x50/0x11c [15278.166829][T50670] pci_deshabilitar_sriov+0x24/0x30 [15278.171433][T50670] hnae3_anular_registro_ae_algo_prepare+0x60/0x90 [hnae3] [15278.178039][T50670] hclge_exit+0x28/0xd0 [hclge] [15278.182730][T50670] __se_sys_delete_module.isra.0+0x164/0x230 [15278.188550][T50670] __arm64_sys_delete_module+0x1c/0x30 [15278.193848][T50670] invocar_syscall+0x50/0x11c [15278.198278][T50670] el0_svc_common.constprop.0+0x158/0x164 [15278.203837][T50670] do_el0_svc+0x34/0xcc [15278.207834][T50670] el0_svc+0x20/0x30 Para obtener m\u00e1s detalles, consulte la siguiente figura. rmmod hclge deshabilitar VFs ---------------------------------------------------- hclge_exit() sriov_numvfs_store() ... device_lock() pci_disable_sriov() hns3_pci_sriov_configure() pci_disable_sriov() sriov_disable() sriov_disable() si !num_VFs: si !num_VFs: devolver; devolver; sriov_del_vfs() sriov_del_vfs() ... ... klist_put() klist_put() ... ... num_VFs = 0; num_VFs = 0; device_unlock(); En este parche, cuando se elimina el controlador, obtenemos device_lock() para proteger num_VFs, al igual que sriov_numvfs_store()."}], "lastModified": "2025-11-03T23:17:12.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B33CD612-5C46-4533-B56E-D417DE841EF6", "versionEndExcluding": "4.19.324", "versionStartIncluding": "4.19.214"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "656DF1AE-5B75-445C-B2FF-373108E88FBF", "versionEndExcluding": "5.4.286", "versionStartIncluding": "5.4.156"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72E8FC35-C1C2-4646-9D95-FED73ACF4904", "versionEndExcluding": "5.10.230", "versionStartIncluding": "5.10.76"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "19C2E641-B44A-468E-8696-41BED0CAF158", "versionEndExcluding": "5.15", "versionStartIncluding": "5.14.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "34401FB8-C1E9-4E82-8273-9E67507E64D2", "versionEndExcluding": "5.15.172", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0DD7F755-2F6B-4707-8973-78496AD5AA8E", "versionEndExcluding": "6.1.117", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "630ED7EB-C97E-4435-B884-1E309E40D6F3", "versionEndExcluding": "6.6.61", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0BD000F7-3DAD-4DD3-8906-98EA1EC67E95", "versionEndExcluding": "6.11.8", "versionStartIncluding": "6.7"}, {"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"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24DBE6C7-2AAE-4818-AED2-E131F153D2FA"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24B88717-53F5-42AA-9B72-14C707639E3F"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}