{ "document": { "aggregate_severity": { "text": "High" }, "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-2026-23361-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:52:47Z", "generator": { "date": "2026-08-25T12:52:47Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-23361-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-03-25T11:16:00Z", "revision_history": [ { "date": "2026-03-25T11:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:52:47Z", "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-2026-23361", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: dwc: ep: Flush MSI-X write before unmapping its ATU entry\n\nEndpoint drivers use dw_pcie_ep_raise_msix_irq() to raise an MSI-X\ninterrupt to the host using a writel(), which generates a PCI posted write\ntransaction. There's no completion for posted writes, so the writel() may\nreturn before the PCI write completes. dw_pcie_ep_raise_msix_irq() also\nunmaps the outbound ATU entry used for the PCI write, so the write races\nwith the unmap.\n\nIf the PCI write loses the race with the ATU unmap, the write may corrupt\nhost memory or cause IOMMU errors, e.g., these when running fio with a\nlarger queue depth against nvmet-pci-epf:\n\n arm-smmu-v3 fc900000.iommu: 0x0000010000000010\n arm-smmu-v3 fc900000.iommu: 0x0000020000000000\n arm-smmu-v3 fc900000.iommu: 0x000000090000f040\n arm-smmu-v3 fc900000.iommu: 0x0000000000000000\n arm-smmu-v3 fc900000.iommu: event: F_TRANSLATION client: 0000:01:00.0 sid: 0x100 ssid: 0x0 iova: 0x90000f040 ipa: 0x0\n arm-smmu-v3 fc900000.iommu: unpriv data write s1 \"Input address caused fault\" stag: 0x0\n\nFlush the write by performing a readl() of the same address to ensure that\nthe write has reached the destination before the ATU entry is unmapped.\n\nThe same problem was solved for dw_pcie_ep_raise_msi_irq() in commit\n8719c64e76bf (\"PCI: dwc: ep: Cache MSI outbound iATU mapping\"), but there\nit was solved by dedicating an outbound iATU only for MSI. We can't do the\nsame for MSI-X because each vector can have a different msg_addr and the\nmsg_addr may be changed while the vector is masked.\n\n[bhelgaas: commit log]", "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-2026-23361" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/6f60a783860c77b309f7d81003b6a0c73feca49e", "url": "https://git.kernel.org/stable/c/6f60a783860c77b309f7d81003b6a0c73feca49e" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a7afb8f810c04845fdfc58c57d9cf0cc5f23ced0", "url": "https://git.kernel.org/stable/c/a7afb8f810c04845fdfc58c57d9cf0cc5f23ced0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c22533c66ccae10511ad6a7afc34bb26c47577e3", "url": "https://git.kernel.org/stable/c/c22533c66ccae10511ad6a7afc34bb26c47577e3" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/eaa6a56801ddd2d9b4980f19e7fe002b00994804", "url": "https://git.kernel.org/stable/c/eaa6a56801ddd2d9b4980f19e7fe002b00994804" } ], "release_date": "2026-03-25T11:16:00Z", "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-08-22T13:27:01.401425Z", "details": "Not affected: CONFIG_PCIE_DW_EP is disabled, so the DesignWare PCIe endpoint code (drivers/pci/controller/dwc/pcie-designware-ep.c) fixed by CVE-2026-23361 is not compiled into shipped debian10els.", "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" ] } ] } ] }