{ "document": { "aggregate_severity": { "text": "High" }, "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/ubuntu20.04els/vex/2025/cve-2025-39911-els_os-ubuntu20_04els.json" } ], "tracking": { "current_release_date": "2026-03-06T16:49:14Z", "generator": { "date": "2026-03-06T16:49:14Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2025-39911-ELS_OS-UBUNTU20.04ELS", "initial_release_date": "2025-10-01T08:15:00Z", "revision_history": [ { "date": "2025-10-01T08:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-03-06T16:49:14Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security 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"relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "linux-buildinfo-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:linux-buildinfo-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64" }, "product_reference": "linux-buildinfo-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "linux-image-unsigned-5.4.0-225-generic-0:5.4.0-225.245.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:linux-image-unsigned-5.4.0-225-generic-0:5.4.0-225.245.amd64" }, "product_reference": "linux-image-unsigned-5.4.0-225-generic-0:5.4.0-225.245.amd64", "relates_to_product_reference": "Ubuntu-20" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-39911", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path\n\nIf request_irq() in i40e_vsi_request_irq_msix() fails in an iteration\nlater than the first, the error path wants to free the IRQs requested\nso far. However, it uses the wrong dev_id argument for free_irq(), so\nit does not free the IRQs correctly and instead triggers the warning:\n\n Trying to free already-free IRQ 173\n WARNING: CPU: 25 PID: 1091 at kernel/irq/manage.c:1829 __free_irq+0x192/0x2c0\n Modules linked in: i40e(+) [...]\n CPU: 25 UID: 0 PID: 1091 Comm: NetworkManager Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)\n Hardware name: [...]\n RIP: 0010:__free_irq+0x192/0x2c0\n [...]\n Call Trace:\n \n free_irq+0x32/0x70\n i40e_vsi_request_irq_msix.cold+0x63/0x8b [i40e]\n i40e_vsi_request_irq+0x79/0x80 [i40e]\n i40e_vsi_open+0x21f/0x2f0 [i40e]\n i40e_open+0x63/0x130 [i40e]\n __dev_open+0xfc/0x210\n __dev_change_flags+0x1fc/0x240\n netif_change_flags+0x27/0x70\n do_setlink.isra.0+0x341/0xc70\n rtnl_newlink+0x468/0x860\n rtnetlink_rcv_msg+0x375/0x450\n netlink_rcv_skb+0x5c/0x110\n netlink_unicast+0x288/0x3c0\n netlink_sendmsg+0x20d/0x430\n ____sys_sendmsg+0x3a2/0x3d0\n ___sys_sendmsg+0x99/0xe0\n __sys_sendmsg+0x8a/0xf0\n do_syscall_64+0x82/0x2c0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [...]\n \n ---[ end trace 0000000000000000 ]---\n\nUse the same dev_id for free_irq() as for request_irq().\n\nI tested this with inserting code to fail intentionally.", "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-20:linux-buildinfo-5.4.0-225-tuxcare.els7-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-buildinfo-5.4.0-225-tuxcare.els7-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-tuxcare.els7-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-tuxcare.els7-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-tuxcare.els7-lowlatency-0:5.4.0-225.245.amd64", 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"https://git.kernel.org/stable/c/6e4016c0dca53afc71e3b99e24252b63417395df", "url": "https://git.kernel.org/stable/c/6e4016c0dca53afc71e3b99e24252b63417395df" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/915470e1b44e71d1dd07ee067276f003c3521ee3", "url": "https://git.kernel.org/stable/c/915470e1b44e71d1dd07ee067276f003c3521ee3" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a30afd6617c30aaa338d1dbcb1e34e7a1890085c", "url": "https://git.kernel.org/stable/c/a30afd6617c30aaa338d1dbcb1e34e7a1890085c" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b905b2acb3a0bbb08ad9be9984d8cdabdf827315", "url": "https://git.kernel.org/stable/c/b905b2acb3a0bbb08ad9be9984d8cdabdf827315" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b9721a023df38cf44a88f2739b4cf51efd051f85", "url": "https://git.kernel.org/stable/c/b9721a023df38cf44a88f2739b4cf51efd051f85" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c62580674ce5feb1be4f90b5873ff3ce50e0a1db", "url": "https://git.kernel.org/stable/c/c62580674ce5feb1be4f90b5873ff3ce50e0a1db" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html", "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "release_date": "2025-10-01T08:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-03-06T16:38:19.622404Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1772815097", "product_ids": [ "Ubuntu-20:linux-buildinfo-5.4.0-225-tuxcare.els7-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-buildinfo-5.4.0-225-tuxcare.els7-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-tuxcare.els7-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-tuxcare.els7-generic-0:5.4.0-225.245.amd64", 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"Ubuntu-20:linux-tools-5.4.0-225-tuxcare.els7-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-5.4.0-225-tuxcare.els7-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-5.4.0-225-tuxcare.els7-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-common-0:5.4.0-225.245.all", "Ubuntu-20:linux-tools-host-0:5.4.0-225.245.all" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1772815097" }, { "category": "none_available", "details": "Affected", "product_ids": [ "Ubuntu-20:linux-buildinfo-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-buildinfo-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-cloud-tools-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-headers-5.4.0-225-0:5.4.0-225.245.all", "Ubuntu-20:linux-headers-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-headers-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-image-unsigned-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-image-unsigned-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-modules-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-modules-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-modules-extra-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-5.4.0-225-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-5.4.0-225-generic-0:5.4.0-225.245.amd64", "Ubuntu-20:linux-tools-5.4.0-225-lowlatency-0:5.4.0-225.245.amd64" ] } ], "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" }, 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