{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu18.04els/vex/2024/cve-2024-50296-els_os-ubuntu18_04els.json" } ], "title": "Security update on CVE-2024-50296", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2024-50296-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2024-11-19T02:16:00Z", "revision_history": [ { "date": "2024-11-19T02:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-05-19T15:23:02Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 18.04", "product": { "name": "Ubuntu 18.04", "product_id": "Ubuntu-18", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product": { "name": "linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product_id": "linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-tools-4.15.0-247-tuxcare.els35-generic@4.15.0-247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-image-generic-0:4.15.0.247.258.amd64", "product": { "name": "linux-image-generic-0:4.15.0.247.258.amd64", "product_id": "linux-image-generic-0:4.15.0.247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-image-generic@4.15.0.247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product": { "name": "linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product_id": "linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-modules-extra-4.15.0-247-tuxcare.els35-generic@4.15.0-247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-generic-0:4.15.0.247.258.amd64", "product": { "name": "linux-generic-0:4.15.0.247.258.amd64", "product_id": "linux-generic-0:4.15.0.247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-generic@4.15.0.247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product": { "name": "linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_id": "linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-modules-4.15.0-247-tuxcare.els35-lowlatency@4.15.0-247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product": { "name": "linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_id": "linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-tools-4.15.0-247-tuxcare.els35-lowlatency@4.15.0-247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "product": { "name": "linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "product_id": "linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-cloud-tools-lowlatency@4.15.0.247.258?arch=amd64" } } }, { "category": "product_version", "name": "linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product": { "name": "linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_id": "linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-headers-4.15.0-247-tuxcare.els35-lowlatency@4.15.0-247.258?arch=amd64" } } } ], "category": "architecture", "name": "amd64" }, { "branches": [ { "category": "product_version", "name": "linux-tools-host-0:4.15.0-247.258.all", "product": { "name": "linux-tools-host-0:4.15.0-247.258.all", "product_id": "linux-tools-host-0:4.15.0-247.258.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-tools-host@4.15.0-247.258?arch=all" } } }, { "category": "product_version", "name": "linux-doc-0:4.15.0-247.258.all", "product": { "name": "linux-doc-0:4.15.0-247.258.all", "product_id": "linux-doc-0:4.15.0-247.258.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-doc@4.15.0-247.258?arch=all" } } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64" }, "product_reference": "linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-image-generic-0:4.15.0.247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-image-generic-0:4.15.0.247.258.amd64" }, "product_reference": "linux-image-generic-0:4.15.0.247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64" }, "product_reference": "linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-generic-0:4.15.0.247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-generic-0:4.15.0.247.258.amd64" }, "product_reference": "linux-generic-0:4.15.0.247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-tools-host-0:4.15.0-247.258.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-tools-host-0:4.15.0-247.258.all" }, "product_reference": "linux-tools-host-0:4.15.0-247.258.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64" }, "product_reference": "linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64" }, "product_reference": "linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-doc-0:4.15.0-247.258.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-doc-0:4.15.0-247.258.all" }, "product_reference": "linux-doc-0:4.15.0-247.258.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64" }, "product_reference": "linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64" }, "product_reference": "linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2024-50296", "cwe": { "id": "CWE-476", "name": "NULL Pointer Dereference" }, "notes": [ { "category": "description", "text": "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().", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-image-generic-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-generic-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-tools-host-0:4.15.0-247.258.all", "Ubuntu-18:linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-doc-0:4.15.0-247.258.all", "Ubuntu-18:linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2024-50296" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09", "url": "https://git.kernel.org/stable/c/590a4b2d4e0b73586e88bce9b8135b593355ec09" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b", "url": "https://git.kernel.org/stable/c/719edd9f3372ce7fb3b157647c6658672946874b" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd", "url": "https://git.kernel.org/stable/c/76b155e14d9b182ce83d32ada2d0d7219ea8c8dd" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d", "url": "https://git.kernel.org/stable/c/7ae4e56de7dbd0999578246a536cf52a63f4056d" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908", "url": "https://git.kernel.org/stable/c/a0df055775f30850c0da8f7dab40d67c0fd63908" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5", "url": "https://git.kernel.org/stable/c/b5c94e4d947d15d521e935ff10c5a22a7883dea5" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18", "url": "https://git.kernel.org/stable/c/df3dff8ab6d79edc942464999d06fbaedf8cdd18" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d", "url": "https://git.kernel.org/stable/c/e36482b222e00cc7aeeea772fc0cf2943590bc4d" } ], "release_date": "2024-11-19T02:16:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-image-generic-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-modules-extra-4.15.0-247-tuxcare.els35-generic-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-generic-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-tools-host-0:4.15.0-247.258.all", "Ubuntu-18:linux-modules-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-tools-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64", "Ubuntu-18:linux-doc-0:4.15.0-247.258.all", "Ubuntu-18:linux-cloud-tools-lowlatency-0:4.15.0.247.258.amd64", "Ubuntu-18:linux-headers-4.15.0-247-tuxcare.els35-lowlatency-0:4.15.0-247.258.amd64" ] } ], "threats": [ { "category": "impact", "details": "Medium" } ] } ] }