{ "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/centos7els/vex/2024/cve-2024-26958-els_os-centos7els.json" } ], "title": "Security update on CVE-2024-26958", "tracking": { "current_release_date": "2025-12-23T20:55:41Z", "generator": { "date": "2025-12-23T20:55:41Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2024-26958-ELS_OS-CENTOS7ELS", "initial_release_date": "2024-05-01T06:15:00Z", "revision_history": [ { "date": "2024-05-01T06:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-07-03T16:29:40Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T20:55:41Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 7", "product": { "name": "Community Enterprise Operating System 7", "product_id": "CentOS-7", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product": { "name": "kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_id": "kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/kernel@3.10.0-1160.119.1.el7.tuxcare.els21?arch=x86_64" } } }, { "category": "product_version", 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"kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product": { "name": "kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_id": "kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/kernel-tools-libs@3.10.0-1160.119.1.el7.tuxcare.els21?arch=x86_64" } } }, { "category": "product_version", "name": "kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product": { "name": "kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_id": "kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/kernel-devel@3.10.0-1160.119.1.el7.tuxcare.els21?arch=x86_64" } } }, { "category": "product_version", "name": "kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product": { "name": "kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_id": "kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/kernel-headers@3.10.0-1160.119.1.el7.tuxcare.els21?arch=x86_64" } } }, { "category": "product_version", "name": "python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product": { "name": "python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_id": "python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/python-perf@3.10.0-1160.119.1.el7.tuxcare.els21?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-tools-libs-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-tools-libs-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-tools-libs-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-debug-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-debug-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-debug-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-debug-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-tools-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-tools-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-tools-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" }, "product_reference": "python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "relates_to_product_reference": "CentOS-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2024-26958", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: fix UAF in direct writes\n\nIn production we have been hitting the following warning consistently\n\n------------[ cut here ]------------\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 17 PID: 1800359 at lib/refcount.c:28 refcount_warn_saturate+0x9c/0xe0\nWorkqueue: nfsiod nfs_direct_write_schedule_work [nfs]\nRIP: 0010:refcount_warn_saturate+0x9c/0xe0\nPKRU: 55555554\nCall Trace:\n \n ? __warn+0x9f/0x130\n ? refcount_warn_saturate+0x9c/0xe0\n ? report_bug+0xcc/0x150\n ? handle_bug+0x3d/0x70\n ? exc_invalid_op+0x16/0x40\n ? asm_exc_invalid_op+0x16/0x20\n ? refcount_warn_saturate+0x9c/0xe0\n nfs_direct_write_schedule_work+0x237/0x250 [nfs]\n process_one_work+0x12f/0x4a0\n worker_thread+0x14e/0x3b0\n ? ZSTD_getCParams_internal+0x220/0x220\n kthread+0xdc/0x120\n ? __btf_name_valid+0xa0/0xa0\n ret_from_fork+0x1f/0x30\n\nThis is because we're completing the nfs_direct_request twice in a row.\n\nThe source of this is when we have our commit requests to submit, we\nprocess them and send them off, and then in the completion path for the\ncommit requests we have\n\nif (nfs_commit_end(cinfo.mds))\n\tnfs_direct_write_complete(dreq);\n\nHowever since we're submitting asynchronous requests we sometimes have\none that completes before we submit the next one, so we end up calling\ncomplete on the nfs_direct_request twice.\n\nThe only other place we use nfs_generic_commit_list() is in\n__nfs_commit_inode, which wraps this call in a\n\nnfs_commit_begin();\nnfs_commit_end();\n\nWhich is a common pattern for this style of completion handling, one\nthat is also repeated in the direct code with get_dreq()/put_dreq()\ncalls around where we process events as well as in the completion paths.\n\nFix this by using the same pattern for the commit requests.\n\nBefore with my 200 node rocksdb stress running this warning would pop\nevery 10ish minutes. With my patch the stress test has been running for\nseveral hours without popping.", "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": [ "CentOS-7:kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-libs-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-debug-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-debug-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2024-26958" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/17f46b803d4f23c66cacce81db35fef3adb8f2af", "url": "https://git.kernel.org/stable/c/17f46b803d4f23c66cacce81db35fef3adb8f2af" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1daf52b5ffb24870fbeda20b4967526d8f9e12ab", "url": "https://git.kernel.org/stable/c/1daf52b5ffb24870fbeda20b4967526d8f9e12ab" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3abc2d160ed8213948b147295d77d44a22c88fa3", "url": "https://git.kernel.org/stable/c/3abc2d160ed8213948b147295d77d44a22c88fa3" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/4595d90b5d2ea5fa4d318d13f59055aa4bf3e7f5", "url": "https://git.kernel.org/stable/c/4595d90b5d2ea5fa4d318d13f59055aa4bf3e7f5" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/80d24b308b7ee7037fc90d8ac99f6f78df0a256f", "url": "https://git.kernel.org/stable/c/80d24b308b7ee7037fc90d8ac99f6f78df0a256f" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/cf54f66e1dd78990ec6b32177bca7e6ea2144a95", "url": "https://git.kernel.org/stable/c/cf54f66e1dd78990ec6b32177bca7e6ea2144a95" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e25447c35f8745337ea8bc0c9697fcac14df8605", "url": "https://git.kernel.org/stable/c/e25447c35f8745337ea8bc0c9697fcac14df8605" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" } ], "release_date": "2024-05-01T06:15:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "CentOS-7:kernel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-libs-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-debug-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-debug-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-tools-libs-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-devel-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:kernel-headers-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64", "CentOS-7:python-perf-0:3.10.0-1160.119.1.el7.tuxcare.els21.x86_64" ] } ], "threats": [ { "category": "impact", "details": "High" } ] } ] }