{ "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-2024-50229-els_os-ubuntu18_04els.json" } ], "title": "Security update on CVE-2024-50229", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2024-50229-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2024-11-09T11:15:00Z", "revision_history": [ { "date": "2024-11-09T11:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-05-19T15:21:54Z", "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-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "product": { "name": "linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "product_id": "linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency@4.15.0-245.256?arch=amd64" } } 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"linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64" }, "product_reference": "linux-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-image-generic-0:4.15.0.245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-image-generic-0:4.15.0.245.256.amd64" }, "product_reference": "linux-image-generic-0:4.15.0.245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64" }, "product_reference": "linux-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-modules-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64" }, "product_reference": "linux-modules-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-buildinfo-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-buildinfo-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64" }, "product_reference": "linux-buildinfo-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-cloud-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-cloud-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64" }, "product_reference": "linux-cloud-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-generic-0:4.15.0.245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-generic-0:4.15.0.245.256.amd64" }, "product_reference": "linux-generic-0:4.15.0.245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-tools-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64" }, "product_reference": "linux-tools-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-modules-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64" }, "product_reference": "linux-modules-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:linux-headers-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64" }, "product_reference": "linux-headers-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2024-50229", "cwe": { "id": "CWE-667", "name": "Improper Locking" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential deadlock with newly created symlinks\n\nSyzbot reported that page_symlink(), called by nilfs_symlink(), triggers\nmemory reclamation involving the filesystem layer, which can result in\ncircular lock dependencies among the reader/writer semaphore\nnilfs->ns_segctor_sem, s_writers percpu_rwsem (intwrite) and the\nfs_reclaim pseudo lock.\n\nThis is because after commit 21fc61c73c39 (\"don't put symlink bodies in\npagecache into highmem\"), the gfp flags of the page cache for symbolic\nlinks are overwritten to GFP_KERNEL via inode_nohighmem().\n\nThis is not a problem for symlinks read from the backing device, because\nthe __GFP_FS flag is dropped after inode_nohighmem() is called. However,\nwhen a new symlink is created with nilfs_symlink(), the gfp flags remain\noverwritten to GFP_KERNEL. Then, memory allocation called from\npage_symlink() etc. triggers memory reclamation including the FS layer,\nwhich may call nilfs_evict_inode() or nilfs_dirty_inode(). And these can\ncause a deadlock if they are called while nilfs->ns_segctor_sem is held:\n\nFix this issue by dropping the __GFP_FS flag from the page cache GFP flags\nof newly created symlinks in the same way that nilfs_new_inode() and\n__nilfs_read_inode() do, as a workaround until we adopt nofs allocation\nscope consistently or improve the locking constraints.", "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-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-image-generic-0:4.15.0.245.256.amd64", "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-buildinfo-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-cloud-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-generic-0:4.15.0.245.256.amd64", "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-headers-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2024-50229" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1246d86e7bbde265761932c6e2dce28c69cdcb91", "url": "https://git.kernel.org/stable/c/1246d86e7bbde265761932c6e2dce28c69cdcb91" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/58c7f44c7b9e5ac7e3b1e5da2572ed7767a12f38", "url": "https://git.kernel.org/stable/c/58c7f44c7b9e5ac7e3b1e5da2572ed7767a12f38" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/69548bb663fcb63f9ee0301be808a36b9d78dac3", "url": "https://git.kernel.org/stable/c/69548bb663fcb63f9ee0301be808a36b9d78dac3" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9aa5d43ac4cace8fb9bd964ff6c23f599dc3cd24", "url": "https://git.kernel.org/stable/c/9aa5d43ac4cace8fb9bd964ff6c23f599dc3cd24" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a1686db1e59f8fc016c4c9361e2119dd206f479a", "url": "https://git.kernel.org/stable/c/a1686db1e59f8fc016c4c9361e2119dd206f479a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b3a033e3ecd3471248d474ef263aadc0059e516a", "url": "https://git.kernel.org/stable/c/b3a033e3ecd3471248d474ef263aadc0059e516a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c72e0df0b56c1166736dc8eb62070ebb12591447", "url": "https://git.kernel.org/stable/c/c72e0df0b56c1166736dc8eb62070ebb12591447" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/cc38c596e648575ce58bfc31623a6506eda4b94a", "url": "https://git.kernel.org/stable/c/cc38c596e648575ce58bfc31623a6506eda4b94a" } ], "release_date": "2024-11-09T11:15:00", "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-cloud-tools-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-image-generic-0:4.15.0.245.256.amd64", "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-buildinfo-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-cloud-tools-4.15.0-245-tuxcare.els33-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-generic-0:4.15.0.245.256.amd64", "Ubuntu-18:linux-tools-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-modules-4.15.0-245-tuxcare.els33-lowlatency-0:4.15.0-245.256.amd64", "Ubuntu-18:linux-headers-4.15.0-245-tuxcare.els33-generic-0:4.15.0-245.256.amd64" ] } ], "threats": [ { "category": "impact", "details": "Medium" } ] } ] }