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CVE-2024-50296 (GCVE-0-2024-50296)

Vulnerability from cvelistv5 – Published: 2024-11-19 01:30 – Updated: 2026-05-23 15:55
VLAI
Title
net: hns3: fix kernel crash when uninstalling driver
Summary
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix kernel crash when uninstalling driver When the driver is uninstalled and the VF is disabled concurrently, a kernel crash occurs. The reason is that the two actions call function pci_disable_sriov(). The num_VFs is checked to determine whether to release the corresponding resources. During the second calling, num_VFs is not 0 and the resource release function is called. However, the corresponding resource has been released during the first invoking. Therefore, the problem occurs: [15277.839633][T50670] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 ... [15278.131557][T50670] Call trace: [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_stop_and_remove_bus_device+0x6c/0x80 [15278.157447][T50670] pci_iov_remove_virtfn+0xb4/0x12c [15278.162485][T50670] sriov_disable+0x50/0x11c [15278.166829][T50670] pci_disable_sriov+0x24/0x30 [15278.171433][T50670] hnae3_unregister_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] invoke_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 For details, see the following figure. rmmod hclge disable VFs ---------------------------------------------------- hclge_exit() sriov_numvfs_store() ... device_lock() pci_disable_sriov() hns3_pci_sriov_configure() pci_disable_sriov() sriov_disable() sriov_disable() if !num_VFs : if !num_VFs : return; return; sriov_del_vfs() sriov_del_vfs() ... ... klist_put() klist_put() ... ... num_VFs = 0; num_VFs = 0; device_unlock(); In this patch, when driver is removing, we get the device_lock() to protect num_VFs, just like sriov_numvfs_store().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:14 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b06ad258e01389ca3ff13bc180f3fcd6a608f1cd , < a0df055775f30850c0da8f7dab40d67c0fd63908 (git)
Affected: c4b64011e458aa2b246cd4e42012cfd83d2d9a5c , < 7ae4e56de7dbd0999578246a536cf52a63f4056d (git)
Affected: d36b15e3e7b5937cb1f6ac590a85facc3a320642 , < 590a4b2d4e0b73586e88bce9b8135b593355ec09 (git)
Affected: 0dd8a25f355b4df2d41c08df1716340854c7d4c5 , < e36482b222e00cc7aeeea772fc0cf2943590bc4d (git)
Affected: 0dd8a25f355b4df2d41c08df1716340854c7d4c5 , < 76b155e14d9b182ce83d32ada2d0d7219ea8c8dd (git)
Affected: 0dd8a25f355b4df2d41c08df1716340854c7d4c5 , < 719edd9f3372ce7fb3b157647c6658672946874b (git)
Affected: 0dd8a25f355b4df2d41c08df1716340854c7d4c5 , < b5c94e4d947d15d521e935ff10c5a22a7883dea5 (git)
Affected: 0dd8a25f355b4df2d41c08df1716340854c7d4c5 , < df3dff8ab6d79edc942464999d06fbaedf8cdd18 (git)
Affected: 9b5a29f0acefa3eb1dbe2fa302b393eeff64d933 (git)
Affected: 4.19.214 , < 4.19.324 (semver)
Affected: 5.4.156 , < 5.4.286 (semver)
Affected: 5.10.76 , < 5.10.230 (semver)
Affected: 5.14.15 , < 5.15 (semver)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 4.19.324 , ≤ 4.19.* (semver)
Unaffected: 5.4.286 , ≤ 5.4.* (semver)
Unaffected: 5.10.230 , ≤ 5.10.* (semver)
Unaffected: 5.15.172 , ≤ 5.15.* (semver)
Unaffected: 6.1.117 , ≤ 6.1.* (semver)
Unaffected: 6.6.61 , ≤ 6.6.* (semver)
Unaffected: 6.11.8 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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          "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()."
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    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.19.214\", \"versionEndExcluding\": \"4.19.324\", \"matchCriteriaId\": \"B33CD612-5C46-4533-B56E-D417DE841EF6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.4.156\", \"versionEndExcluding\": \"5.4.286\", \"matchCriteriaId\": \"656DF1AE-5B75-445C-B2FF-373108E88FBF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.10.76\", \"versionEndExcluding\": \"5.10.230\", \"matchCriteriaId\": \"72E8FC35-C1C2-4646-9D95-FED73ACF4904\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.14.15\", \"versionEndExcluding\": \"5.15\", \"matchCriteriaId\": \"19C2E641-B44A-468E-8696-41BED0CAF158\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.15\", \"versionEndExcluding\": \"5.15.172\", \"matchCriteriaId\": \"34401FB8-C1E9-4E82-8273-9E67507E64D2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.117\", \"matchCriteriaId\": \"0DD7F755-2F6B-4707-8973-78496AD5AA8E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.61\", \"matchCriteriaId\": \"630ED7EB-C97E-4435-B884-1E309E40D6F3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.11.8\", \"matchCriteriaId\": \"0BD000F7-3DAD-4DD3-8906-98EA1EC67E95\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7F361E1D-580F-4A2D-A509-7615F73167A1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"E0F717D8-3014-4F84-8086-0124B2111379\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\", \"matchCriteriaId\": \"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\", \"matchCriteriaId\": \"24B88717-53F5-42AA-9B72-14C707639E3F\"}]}]}]",
      "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().\"}]",
      "id": "CVE-2024-50296",
      "lastModified": "2024-11-27T15:24:16.020",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-11-19T02:16:31.780",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-19T01:15:29.000Z",
      "cve": "CVE-2024-50296",
      "id": "msrc_CVE-2024-50296",
      "initial_release_date": "2024-11-02T00:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: hns3: fix kernel crash when uninstalling driver",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50296.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50296\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T02:16:31.780\",\"lastModified\":\"2026-06-17T08:04:09.263\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/hisilicon/hns3/hnae3.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b06ad258e01389ca3ff13bc180f3fcd6a608f1cd\",\"lessThan\":\"a0df055775f30850c0da8f7dab40d67c0fd63908\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c4b64011e458aa2b246cd4e42012cfd83d2d9a5c\",\"lessThan\":\"7ae4e56de7dbd0999578246a536cf52a63f4056d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d36b15e3e7b5937cb1f6ac590a85facc3a320642\",\"lessThan\":\"590a4b2d4e0b73586e88bce9b8135b593355ec09\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0dd8a25f355b4df2d41c08df1716340854c7d4c5\",\"lessThan\":\"e36482b222e00cc7aeeea772fc0cf2943590bc4d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0dd8a25f355b4df2d41c08df1716340854c7d4c5\",\"lessThan\":\"76b155e14d9b182ce83d32ada2d0d7219ea8c8dd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0dd8a25f355b4df2d41c08df1716340854c7d4c5\",\"lessThan\":\"719edd9f3372ce7fb3b157647c6658672946874b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0dd8a25f355b4df2d41c08df1716340854c7d4c5\",\"lessThan\":\"b5c94e4d947d15d521e935ff10c5a22a7883dea5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0dd8a25f355b4df2d41c08df1716340854c7d4c5\",\"lessThan\":\"df3dff8ab6d79edc942464999d06fbaedf8cdd18\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9b5a29f0acefa3eb1dbe2fa302b393eeff64d933\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.19.214\",\"lessThan\":\"4.19.324\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.156\",\"lessThan\":\"5.4.286\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.10.76\",\"lessThan\":\"5.10.230\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.14.15\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/hisilicon/hns3/hnae3.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.324\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.286\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.230\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.172\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.117\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.61\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.8\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T20:14:08.140052Z\",\"id\":\"CVE-2024-50296\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.214\",\"versionEndExcluding\":\"4.19.324\",\"matchCriteriaId\":\"B33CD612-5C46-4533-B56E-D417DE841EF6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.156\",\"versionEndExcluding\":\"5.4.286\",\"matchCriteriaId\":\"656DF1AE-5B75-445C-B2FF-373108E88FBF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.76\",\"versionEndExcluding\":\"5.10.230\",\"matchCriteriaId\":\"72E8FC35-C1C2-4646-9D95-FED73ACF4904\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.14.15\",\"versionEndExcluding\":\"5.15\",\"matchCriteriaId\":\"19C2E641-B44A-468E-8696-41BED0CAF158\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15\",\"versionEndExcluding\":\"5.15.172\",\"matchCriteriaId\":\"34401FB8-C1E9-4E82-8273-9E67507E64D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.117\",\"matchCriteriaId\":\"0DD7F755-2F6B-4707-8973-78496AD5AA8E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.61\",\"matchCriteriaId\":\"630ED7EB-C97E-4435-B884-1E309E40D6F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.8\",\"matchCriteriaId\":\"0BD000F7-3DAD-4DD3-8906-98EA1EC67E95\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B88717-53F5-42AA-9B72-14C707639E3F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"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\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:18:18+00:00",
      "cve": "CVE-2024-50296",
      "id": "CVE-2024-50296",
      "initial_release_date": "2024-11-19T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: hns3: fix kernel crash when uninstalling driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50296.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T16:42:48Z",
      "cve": "CVE-2024-50296",
      "id": "CVE-2024-50296",
      "initial_release_date": "2024-11-19T03:48:59Z",
      "product_status:known_affected": "434",
      "product_status:known_not_affected": "332",
      "product_status:recommended": "416",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50296",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50296.json",
      "version": "64"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50296\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:14:08.140052Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:27:40.968Z\"}}], \"cna\": {\"title\": \"net: hns3: fix kernel crash when uninstalling driver\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b06ad258e01389ca3ff13bc180f3fcd6a608f1cd\", \"lessThan\": \"a0df055775f30850c0da8f7dab40d67c0fd63908\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c4b64011e458aa2b246cd4e42012cfd83d2d9a5c\", \"lessThan\": \"7ae4e56de7dbd0999578246a536cf52a63f4056d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d36b15e3e7b5937cb1f6ac590a85facc3a320642\", \"lessThan\": \"590a4b2d4e0b73586e88bce9b8135b593355ec09\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0dd8a25f355b4df2d41c08df1716340854c7d4c5\", \"lessThan\": \"e36482b222e00cc7aeeea772fc0cf2943590bc4d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0dd8a25f355b4df2d41c08df1716340854c7d4c5\", \"lessThan\": \"76b155e14d9b182ce83d32ada2d0d7219ea8c8dd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0dd8a25f355b4df2d41c08df1716340854c7d4c5\", \"lessThan\": \"719edd9f3372ce7fb3b157647c6658672946874b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0dd8a25f355b4df2d41c08df1716340854c7d4c5\", \"lessThan\": \"b5c94e4d947d15d521e935ff10c5a22a7883dea5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0dd8a25f355b4df2d41c08df1716340854c7d4c5\", \"lessThan\": \"df3dff8ab6d79edc942464999d06fbaedf8cdd18\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9b5a29f0acefa3eb1dbe2fa302b393eeff64d933\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/hisilicon/hns3/hnae3.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.324\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.286\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.230\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.172\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.117\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.61\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/hisilicon/hns3/hnae3.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908\"}, {\"url\": \"https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d\"}, {\"url\": \"https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09\"}, {\"url\": \"https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d\"}, {\"url\": \"https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd\"}, {\"url\": \"https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b\"}, {\"url\": \"https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5\"}, {\"url\": \"https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.324\", \"versionStartIncluding\": \"4.19.214\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.286\", \"versionStartIncluding\": \"5.4.156\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.230\", \"versionStartIncluding\": \"5.10.76\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.172\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.117\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.61\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.8\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.14.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:00:12.984Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50296\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T20:17:20.512Z\", \"dateReserved\": \"2024-10-21T19:36:19.986Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-19T01:30:43.318Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.