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

Vulnerability from cvelistv5 – Published: 2024-11-19 01:30 – Updated: 2025-11-03 22:28
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
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
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)
Create a notification for this product.
    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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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50296",
    "datePublished": "2024-11-19T01:30:43.318Z",
    "dateReserved": "2024-10-21T19:36:19.986Z",
    "dateUpdated": "2025-11-03T22:28:15.254Z",
    "state": "PUBLISHED"
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\"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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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.