{"id":"CVE-2024-50296","state":"PUBLISHED","title":"net: hns3: fix kernel crash when uninstalling driver","description":"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().","publishedAt":"2024-11-19T01:30:43.318Z","updatedAt":"2026-05-23T15:55:00.827Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b06ad258e01389ca3ff13bc180f3fcd6a608f1cd","status":"affected","lessThan":"a0df055775f30850c0da8f7dab40d67c0fd63908","versionType":"git"},{"version":"c4b64011e458aa2b246cd4e42012cfd83d2d9a5c","status":"affected","lessThan":"7ae4e56de7dbd0999578246a536cf52a63f4056d","versionType":"git"},{"version":"d36b15e3e7b5937cb1f6ac590a85facc3a320642","status":"affected","lessThan":"590a4b2d4e0b73586e88bce9b8135b593355ec09","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"e36482b222e00cc7aeeea772fc0cf2943590bc4d","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"76b155e14d9b182ce83d32ada2d0d7219ea8c8dd","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"719edd9f3372ce7fb3b157647c6658672946874b","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"b5c94e4d947d15d521e935ff10c5a22a7883dea5","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"df3dff8ab6d79edc942464999d06fbaedf8cdd18","versionType":"git"},{"version":"9b5a29f0acefa3eb1dbe2fa302b393eeff64d933","status":"affected","versionType":"git"},{"version":"4.19.214","status":"affected","lessThan":"4.19.324","versionType":"semver"},{"version":"5.4.156","status":"affected","lessThan":"5.4.286","versionType":"semver"},{"version":"5.10.76","status":"affected","lessThan":"5.10.230","versionType":"semver"},{"version":"5.14.15","status":"affected","lessThan":"5.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns3/hnae3.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"4.19.324","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.286","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.230","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.172","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.117","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.61","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.8","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns3/hnae3.c"]}],"references":["https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908","https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d","https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09","https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d","https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd","https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b","https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5","https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18","https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:07:56.516Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/50xxx/CVE-2024-50296.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-50296","state":"PUBLISHED","datePublished":"2024-11-19T01:30:43.318Z","dateUpdated":"2026-05-23T15:55:00.827Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-10-21T19:36:19.986Z"},"containers":{"cna":{"title":"net: hns3: fix kernel crash when uninstalling driver","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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b06ad258e01389ca3ff13bc180f3fcd6a608f1cd","status":"affected","lessThan":"a0df055775f30850c0da8f7dab40d67c0fd63908","versionType":"git"},{"version":"c4b64011e458aa2b246cd4e42012cfd83d2d9a5c","status":"affected","lessThan":"7ae4e56de7dbd0999578246a536cf52a63f4056d","versionType":"git"},{"version":"d36b15e3e7b5937cb1f6ac590a85facc3a320642","status":"affected","lessThan":"590a4b2d4e0b73586e88bce9b8135b593355ec09","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"e36482b222e00cc7aeeea772fc0cf2943590bc4d","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"76b155e14d9b182ce83d32ada2d0d7219ea8c8dd","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"719edd9f3372ce7fb3b157647c6658672946874b","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"b5c94e4d947d15d521e935ff10c5a22a7883dea5","versionType":"git"},{"version":"0dd8a25f355b4df2d41c08df1716340854c7d4c5","status":"affected","lessThan":"df3dff8ab6d79edc942464999d06fbaedf8cdd18","versionType":"git"},{"version":"9b5a29f0acefa3eb1dbe2fa302b393eeff64d933","status":"affected","versionType":"git"},{"version":"4.19.214","status":"affected","lessThan":"4.19.324","versionType":"semver"},{"version":"5.4.156","status":"affected","lessThan":"5.4.286","versionType":"semver"},{"version":"5.10.76","status":"affected","lessThan":"5.10.230","versionType":"semver"},{"version":"5.14.15","status":"affected","lessThan":"5.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns3/hnae3.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"4.19.324","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.286","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.230","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.172","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.117","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.61","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.8","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/hisilicon/hns3/hnae3.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:55:00.827Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.214","versionEndExcluding":"4.19.324"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.156","versionEndExcluding":"5.4.286"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.76","versionEndExcluding":"5.10.230"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.172"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.11.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"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":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T20:17:20.512Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T22:28:15.254Z"}}]}}}