{ "document": { "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-2026-31780-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:54:00Z", "generator": { "date": "2026-08-25T12:54:00Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-31780-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-05-01T14:15:07Z", "revision_history": [ { "date": "2026-05-01T14:15:07Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:54:00Z", "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-2026-31780", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation\n\nThe variable valuesize is declared as u8 but accumulates the total\nlength of all SSIDs to scan. Each SSID contributes up to 33 bytes\n(IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10)\nSSIDs the total can reach 330, which wraps around to 74 when stored\nin a u8.\n\nThis causes kmalloc to allocate only 75 bytes while the subsequent\nmemcpy writes up to 331 bytes into the buffer, resulting in a 256-byte\nheap buffer overflow.\n\nWiden valuesize from u8 to u32 to accommodate the full range.", "title": "Vulnerability description" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "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-2026-31780" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/0c7f21d8bd2f93998b72b7a7f93152336aeca4dd", "url": "https://git.kernel.org/stable/c/0c7f21d8bd2f93998b72b7a7f93152336aeca4dd" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/34a23fd9ddd683a03c7e8cc0ceded3e59e354b99", "url": "https://git.kernel.org/stable/c/34a23fd9ddd683a03c7e8cc0ceded3e59e354b99" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/549f02d8ec94d39092ab6d9b103d0d6783a4b024", "url": "https://git.kernel.org/stable/c/549f02d8ec94d39092ab6d9b103d0d6783a4b024" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7", "url": "https://git.kernel.org/stable/c/9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/bfbddeadd4779651403035ee177ae2f22f9f5521", "url": "https://git.kernel.org/stable/c/bfbddeadd4779651403035ee177ae2f22f9f5521" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c97b2a00059608592ad0d86fbb813a4f8cf9464b", "url": "https://git.kernel.org/stable/c/c97b2a00059608592ad0d86fbb813a4f8cf9464b" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/d049e56b1739101d1c4d81deedb269c52a8dbba0", "url": "https://git.kernel.org/stable/c/d049e56b1739101d1c4d81deedb269c52a8dbba0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/d8388614de613c28eeb659c10115060a83739924", "url": "https://git.kernel.org/stable/c/d8388614de613c28eeb659c10115060a83739924" } ], "release_date": "2026-05-01T14:15:07Z", "threats": [ { "category": "impact", "details": "Moderate" }, { "category": "impact", "date": "2026-08-06T12:21:06.177148Z", "details": "The debian10els kernel is not affected by CVE-2026-31780: the vulnerable code was never introduced into this branch.", "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" ] } ] } ] }