{ "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-2026-68139-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:52:55Z", "generator": { "date": "2026-08-25T12:52:55Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-68139-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": "2026-08-25T12:52:55Z", "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-2026-68139", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Use sender devcom for MPV master-up\n\nAfter PCIe DPC recovery, mlx5 reloads the affected functions and\nreplays multiport affiliation events. In the reported failure, the\nfirst relevant device error was:\n\n pcieport 0000:10:01.1: DPC: containment event\n pcieport 0000:10:01.1: PCIe Bus Error: severity=Uncorrected (Fatal)\n pcieport 0000:10:01.1: [ 5] SDES (First)\n\nmlx5 recovered the PCI functions and resumed 0000:11:00.1. During\nthat resume, RDMA multiport binding replayed\nMLX5_DRIVER_EVENT_AFFILIATION_DONE and mlx5e sent\nMPV_DEVCOM_MASTER_UP. The host then panicked with:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000010\n RIP: mlx5_devcom_comp_set_ready+0x5/0x40 [mlx5_core]\n RDI: 0000000000000000\n\nCall trace included:\n\n mlx5_devcom_comp_set_ready\n mlx5e_devcom_event_mpv\n mlx5_devcom_send_event\n mlx5_ib_bind_slave_port\n mlx5r_mp_probe\n mlx5_pci_resume\n\nMPV devcom registration publishes mlx5e private data to the component\npeer list before mlx5e_devcom_init_mpv() stores the returned component\ndevice in priv->devcom. A concurrent master-up event can therefore\nreach a peer whose private data is visible but whose priv->devcom\nbackpointer is still NULL.\n\nMPV_DEVCOM_MASTER_UP already carries the sender/master mlx5e private\ndata as event_data. The ready bit is stored on the shared devcom\ncomponent, not on an individual peer. Use the sender devcom when\nmarking the MPV component ready.\n\nThis preserves the readiness transition while avoiding a NULL\ndereference of the peer devcom pointer during affiliation replay after\nPCI error recovery.", "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-2026-68139" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/40f9a124ebbe0d60fe165fb3f87515c35b2d72f5", "url": "https://git.kernel.org/stable/c/40f9a124ebbe0d60fe165fb3f87515c35b2d72f5" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a60c81f168c9fe4f5d84302d1e32b717f5a8a933", "url": "https://git.kernel.org/stable/c/a60c81f168c9fe4f5d84302d1e32b717f5a8a933" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c698b2735613f1f35c55688bd2252f75f31c49ad", "url": "https://git.kernel.org/stable/c/c698b2735613f1f35c55688bd2252f75f31c49ad" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e32649b4bad90a6216d8e93cd7dd050af8ac9740", "url": "https://git.kernel.org/stable/c/e32649b4bad90a6216d8e93cd7dd050af8ac9740" } ], "release_date": "2026-08-10T13:19:00Z", "threats": [ { "category": "impact", "details": "Moderate" }, { "category": "impact", "date": "2026-08-22T12:54:40.228749Z", "details": "This kernel is not affected by CVE-2026-68139. The NULL-pointer dereference lives in the mlx5 multiport-device (MPV) devcom event handling that was added to the mlx5 driver after this kernel's base. A broad search of the source tree finds none of that MPV devcom code, so the vulnerability 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" ] } ] } ] }