{ "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/debian10els/vex/2026/cve-2026-43038-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:53:26Z", "generator": { "date": "2026-08-25T12:53:26Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-43038-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-05-01T15:16:00Z", "revision_history": [ { "date": "2026-05-01T15:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:53:26Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on 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"category": "default_component_of", "full_product_name": { "name": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-43038", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()\n\nSashiko AI-review observed:\n\n In ip6_err_gen_icmpv6_unreach(), the skb is an outer IPv4 ICMP error packet\n where its cb contains an IPv4 inet_skb_parm. When skb is cloned into skb2\n and passed to icmp6_send(), it uses IP6CB(skb2).\n\n IP6CB interprets the IPv4 inet_skb_parm as an inet6_skb_parm. The cipso\n offset in inet_skb_parm.opt directly overlaps with dsthao in inet6_skb_parm\n at offset 18.\n\n If an attacker sends a forged ICMPv4 error with a CIPSO IP option, dsthao\n would be a non-zero offset. Inside icmp6_send(), mip6_addr_swap() is called\n and uses ipv6_find_tlv(skb, opt->dsthao, IPV6_TLV_HAO).\n\n This would scan the inner, attacker-controlled IPv6 packet starting at that\n offset, potentially returning a fake TLV without checking if the remaining\n packet length can hold the full 18-byte struct ipv6_destopt_hao.\n\n Could mip6_addr_swap() then perform a 16-byte swap that extends past the end\n of the packet data into skb_shared_info?\n\n Should the cb array also be cleared in ip6_err_gen_icmpv6_unreach() and\n ip6ip6_err() to prevent this?\n\nThis patch implements the first suggestion.\n\nI am not sure if ip6ip6_err() needs to be changed.\nA separate patch would be better anyway.", "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": { "under_investigation": [ "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-43038" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/0452b6526b2f54b2413b9cb4ff1ea2ac542c99c7", "url": "https://git.kernel.org/stable/c/0452b6526b2f54b2413b9cb4ff1ea2ac542c99c7" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1ceeebd5bd6d855b17a5df625109bfe29129d7cf", "url": "https://git.kernel.org/stable/c/1ceeebd5bd6d855b17a5df625109bfe29129d7cf" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3d5127d998de617b130aae96b138dba22ac6a8a7", "url": "https://git.kernel.org/stable/c/3d5127d998de617b130aae96b138dba22ac6a8a7" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/86ab3e55673a7a49a841838776f1ab18d23a67b5", "url": "https://git.kernel.org/stable/c/86ab3e55673a7a49a841838776f1ab18d23a67b5" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a2edbb6393972a02114b6003953a5cef3104fada", "url": "https://git.kernel.org/stable/c/a2edbb6393972a02114b6003953a5cef3104fada" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a4437faf135da293d16fcc4cc607316742bd0ebb", "url": "https://git.kernel.org/stable/c/a4437faf135da293d16fcc4cc607316742bd0ebb" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c438ba010171b70bad22fc18b1d5bdc3627476e8", "url": "https://git.kernel.org/stable/c/c438ba010171b70bad22fc18b1d5bdc3627476e8" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e41953e7d118e2702bcb217879c173d9d1d3cd4e", "url": "https://git.kernel.org/stable/c/e41953e7d118e2702bcb217879c173d9d1d3cd4e" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:22900", "url": "https://access.redhat.com/errata/RHSA-2026:22900" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:22940", "url": "https://access.redhat.com/errata/RHSA-2026:22940" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:22964", "url": "https://access.redhat.com/errata/RHSA-2026:22964" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:23224", "url": "https://access.redhat.com/errata/RHSA-2026:23224" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:23237", "url": "https://access.redhat.com/errata/RHSA-2026:23237" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:24343", "url": "https://access.redhat.com/errata/RHSA-2026:24343" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:25120", "url": "https://access.redhat.com/errata/RHSA-2026:25120" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:25121", "url": "https://access.redhat.com/errata/RHSA-2026:25121" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:25533", "url": "https://access.redhat.com/errata/RHSA-2026:25533" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:26535", "url": "https://access.redhat.com/errata/RHSA-2026:26535" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:30129", "url": "https://access.redhat.com/errata/RHSA-2026:30129" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:30848", "url": "https://access.redhat.com/errata/RHSA-2026:30848" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55618", "url": "https://access.redhat.com/errata/RHSA-2026:55618" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55761", "url": "https://access.redhat.com/errata/RHSA-2026:55761" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55762", "url": "https://access.redhat.com/errata/RHSA-2026:55762" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55763", "url": "https://access.redhat.com/errata/RHSA-2026:55763" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55837", "url": "https://access.redhat.com/errata/RHSA-2026:55837" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56224", "url": "https://access.redhat.com/errata/RHSA-2026:56224" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56225", "url": "https://access.redhat.com/errata/RHSA-2026:56225" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-43038", "url": "https://access.redhat.com/security/cve/CVE-2026-43038" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2464397", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464397" }, { "category": "external", "summary": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html" }, { "category": "external", "summary": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html", "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43038.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43038.json" } ], "release_date": "2026-05-01T15:16:00Z", "remediations": [ { "category": "none_available", "date": "2026-08-21T12:18:25.551142Z", "details": "Affected", "product_ids": [ "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "version": "3.1" }, "products": [ "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }