{ "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-2026-68117-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:52:51Z", "generator": { "date": "2026-08-25T12:52:51Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-68117-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": "2026-08-25T12:52:51Z", "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-2026-68117", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: clear sock->sk on the failed-insert path in tipc_sk_create()\n\nWhen tipc_sk_create() fails to insert the new socket (tipc_sk_insert()\nreturns non-zero), its error path frees the sk with sk_free() but leaves\nsock->sk pointing at the freed object:\n\n\tif (tipc_sk_insert(tsk)) {\n\t\tsk_free(sk);\n\t\tpr_warn(\"Socket create failed; port number exhausted\\n\");\n\t\treturn -EINVAL;\n\t}\n\nThis is harmless for plain socket(): the syscall layer clears sock->ops\nbefore releasing, so tipc_release() is never called. It is not harmless\non the accept() path. tipc_accept() creates the pre-allocated child\nsocket with tipc_sk_create(net, new_sock, 0, kern); on failure it leaves\nnew_sock->sk dangling and new_sock->ops non-NULL, and do_accept() then\nfput()s the new file, so __sock_release() -> tipc_release() runs\nlock_sock(new_sock->sk) on the freed sk -- a use-after-free write of the\nsk_lock spinlock.\n\ntipc_release() already guards this exact \"failed accept() releases a\npre-allocated child\" case with \"if (sk == NULL) return 0;\", but the\nguard is bypassed because tipc_sk_create() left sock->sk non-NULL\n(dangling) rather than NULL.\n\nClear sock->sk on the failed-insert path so the existing tipc_release()\nNULL check fires and the use-after-free is avoided.\n\nThe tipc_sk_insert() failure is reached when the per-netns socket\nrhashtable hits its max_size (tsk_rht_params.max_size = 1048576, ~2M\nelements) -- i.e. once a netns holds ~2M TIPC sockets every insert\nreturns -E2BIG.\n\n BUG: KASAN: slab-use-after-free in lock_sock_nested (net/core/sock.c:3839)\n Write of size 8 at addr ffff8880047cdc38 by task init/1\n lock_sock_nested (net/core/sock.c:3839)\n tipc_release (net/tipc/socket.c:638)\n __sock_release (net/socket.c:710)\n sock_close (net/socket.c:1501)\n __fput (fs/file_table.c:512)\n Allocated by task 1:\n sk_alloc (net/core/sock.c:2308)\n tipc_sk_create (net/tipc/socket.c:487)\n tipc_accept (net/tipc/socket.c:2744)\n do_accept (net/socket.c:2034)\n Freed by task 1:\n __sk_destruct (net/core/sock.c:2391)\n tipc_sk_create (net/tipc/socket.c:504)\n tipc_accept (net/tipc/socket.c:2744)\n do_accept (net/socket.c:2034)", "title": "Vulnerability description" } ], "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-2026-68117" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/5f5a41a48dbf9eda57b67ce23e548602cf7195a6", "url": "https://git.kernel.org/stable/c/5f5a41a48dbf9eda57b67ce23e548602cf7195a6" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/82f59aa27f33bd014a7d8739371ab5712d15e33b", "url": "https://git.kernel.org/stable/c/82f59aa27f33bd014a7d8739371ab5712d15e33b" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/8d6f26d48e61ef34f1921289401dbf36b10816af", "url": "https://git.kernel.org/stable/c/8d6f26d48e61ef34f1921289401dbf36b10816af" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b07d87b31631edb6529e6cdcca790a7489d1250d", "url": "https://git.kernel.org/stable/c/b07d87b31631edb6529e6cdcca790a7489d1250d" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/ba0533fc163f905fe817cfabdf8ed4058da44800", "url": "https://git.kernel.org/stable/c/ba0533fc163f905fe817cfabdf8ed4058da44800" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/dd29891ed840f6b8d020b759d0dc4a00b1d6e4ea", "url": "https://git.kernel.org/stable/c/dd29891ed840f6b8d020b759d0dc4a00b1d6e4ea" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/efebc23e9b29e3e5a9e2127dd066929f7f0d315e", "url": "https://git.kernel.org/stable/c/efebc23e9b29e3e5a9e2127dd066929f7f0d315e" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/f9596b1566616a8be0592dbceccb6344a7c6f6bb", "url": "https://git.kernel.org/stable/c/f9596b1566616a8be0592dbceccb6344a7c6f6bb" } ], "release_date": "2026-08-10T13:19:00Z", "remediations": [ { "category": "none_available", "date": "2026-08-22T13:04:04.172814Z", "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" ] } ] } ] }