{ "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-2026-68095-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:52:56Z", "generator": { "date": "2026-08-25T12:52:56Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-68095-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": "2026-08-25T12:52:56Z", "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-2026-68095", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: fix race between registration and connection abortion\n\nThis fixes this race:\n- thread a: io_uring_enter -> register sqe ->\n fuse_uring_create_ring_ent -> allocate ent but doesn't grab queue_ref\n yet\n- thread b: fuse_conn_destroy() -> fuse_chan_abort() ->\n fuse_uring_abort() is a no-op due to queue ref being 0\n- thread a: grabs the queue_ref, queue_ref is now 1, rest of\n fuse_uring_do_register() logic executes\n- thread b: fuse_chan_abort() returns, fuse_chan_wait_aborted() now runs\n and calls\n \"wait_event(ring->stop_waitq, atomic_read(&ring->queue_refs) == 0);\"\nThe abort/unmount thread will hang indefinitely in unkillable state as\nnothing will decrement queue_refs or wake stop_waitq, and the ring,\nqueue, and ent are leaked.\n\nFix this by checking fch->connected under fch->lock after the created\nent has grabbed a ref count on the queue. This ensures that in the\nscenario above, it is guaranteed that we either release the queue ref\nand wake up stop_waitq (in case fuse_chan_wait_aborted() is already\nwaiting) in fuse_uring_do_register() when we detect !fch->connected, or\nif the connection is aborted after the check, it is guaranteed that the\nasync teardown worker will be running in the background cleaning up ents\nand decrementing the ent's ref on the queue, which will unblock the\neventual queue and ring teardown.", "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-2026-68095" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/2cd945492bc5b472e814272e88b731bb9bb17629", "url": "https://git.kernel.org/stable/c/2cd945492bc5b472e814272e88b731bb9bb17629" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3bca70235a706de76fe9a81defd37d987062c686", "url": "https://git.kernel.org/stable/c/3bca70235a706de76fe9a81defd37d987062c686" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/952b5d36f6a298f57c52a59e72076c69386a8aaf", "url": "https://git.kernel.org/stable/c/952b5d36f6a298f57c52a59e72076c69386a8aaf" } ], "release_date": "2026-08-10T13:19:00Z", "threats": [ { "category": "impact", "details": "Moderate" }, { "category": "impact", "date": "2026-08-22T12:54:19.840792Z", "details": "CVE-2026-68095 does not affect debian10els because the vulnerable code was never introduced. The race fixed by the patch lives in the FUSE-over-io-uring registration path (fs/fuse/dev_uring.c), a feature added to the Linux kernel in 6.13; this 4.19-based kernel has no FUSE io-uring support at all.", "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" ] } ] } ] }