{ "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-2026-68129-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:53:20Z", "generator": { "date": "2026-08-25T12:53:20Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-68129-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-08-10T13:19:00Z", "revision_history": [ { "date": "2026-08-10T13:19:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:53:20Z", "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-2026-68129", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ngve: fix Rx queue stall on alloc failure\n\nWhen the system is under extreme memory pressure, page allocations can\nfail during the Rx buffer refill loop. If the number of buffers posted\nto hardware falls below a critical low threshold and the refill loop\nexits due to allocation failures, the queue can stall:\n\n1. The device drops incoming packets because there are no descriptors.\n2. Since no packets are processed, no Rx completions are generated.\n3. Because no completions occur, NAPI is never scheduled, preventing\n the refill loop from running again even after memory is freed.\n\nThis results in a permanent queue stall.\n\nResolve this by introducing a starvation recovery timer for each Rx queue.\nIf the number of buffers posted to hardware falls below a critical low\nthreshold, start a timer to periodically reschedule NAPI. Once NAPI runs\nand successfully refills the queue above the threshold, the timer is\nnot rescheduled.\n\nThe threshold is set to 32 because a single maximum-sized Receive Segment\nCoalescing (RSC) packet can consume up to 19 descriptors in the Rx path.\nLower thresholds (such as 8 or 16) would be insufficient to process a\ncomplete maximum-sized RSC packet, risking packet drops or unexpected\nhardware behavior under memory pressure. Setting the threshold to 32\nguarantees a safe margin to handle at least one full RSC packet.", "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-2026-68129" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/0c317349b4baa5038d1fc373bf46d5a2419d1710", "url": "https://git.kernel.org/stable/c/0c317349b4baa5038d1fc373bf46d5a2419d1710" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/299d5728a7312fdd02059b074aebbe4ebbd391e4", "url": "https://git.kernel.org/stable/c/299d5728a7312fdd02059b074aebbe4ebbd391e4" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/42d525e751c61b876b2b0ae4e71ba7a8ab0c2777", "url": "https://git.kernel.org/stable/c/42d525e751c61b876b2b0ae4e71ba7a8ab0c2777" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/689b9f588d2d7323dc66293fe594a68d030f400f", "url": "https://git.kernel.org/stable/c/689b9f588d2d7323dc66293fe594a68d030f400f" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/91e0249f3ef62b75fe8c9c9372eaba32876e4b3a", "url": "https://git.kernel.org/stable/c/91e0249f3ef62b75fe8c9c9372eaba32876e4b3a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9db46e19e5d6bdcd4bf811284a5b0df1b984ef80", "url": "https://git.kernel.org/stable/c/9db46e19e5d6bdcd4bf811284a5b0df1b984ef80" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b65352a1bac64442ad95e64f385b40ccb9f1b0db", "url": "https://git.kernel.org/stable/c/b65352a1bac64442ad95e64f385b40ccb9f1b0db" } ], "release_date": "2026-08-10T13:19:00Z", "threats": [ { "category": "impact", "details": "Moderate" }, { "category": "impact", "date": "2026-08-22T07:47:27.484145Z", "details": "debian10els is not affected by CVE-2026-68129. The Rx-queue stall on allocation failure is in the Google gve driver's DQO RX path, added in Linux 5.13. This kernel does not carry the gve DQO RX code, so broad greps for its buffer-post/allocation helpers return empty and the vulnerable code was never introduced.", "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" ] } ] } ] }