{ "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-2026-23227-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-2026-23227-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-02-18T14:53:30Z", "revision_history": [ { "date": "2026-02-18T14:53:30Z", "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": "architecture", "name": "all" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "libcpupower1-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 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"linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all as a component of Debian 10", "product_id": "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all" }, "product_reference": "linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "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-2026-23227", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\n\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\n\nFor example, use-after-free can occur in race scenario like this:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n vidi_connection_ioctl()\n if (vidi->connection) // true\n drm_edid = drm_edid_alloc(); // alloc drm_edid\n ...\n ctx->raw_edid = drm_edid;\n ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t vidi_get_modes()\n\t\t\t\t\t\t\t\t if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t if (!drm_edid) // false\n\t\t\t\t\t\t\t\t ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t if (vidi->connection) // false\n\t\t\t\t drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t ...\n\t\t\t\t\t\t\t\t drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t ...\n```\n\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock.", "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-2026-23227" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385", "url": "https://git.kernel.org/stable/c/0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13", "url": "https://git.kernel.org/stable/c/1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/52b330799e2d6f825ae2bb74662ec1b10eb954bb", "url": "https://git.kernel.org/stable/c/52b330799e2d6f825ae2bb74662ec1b10eb954bb" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/56966a4cfa925ec24edb68ab652a740a7abe2c4d", "url": "https://git.kernel.org/stable/c/56966a4cfa925ec24edb68ab652a740a7abe2c4d" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/60b75407c172e1f341a8a5097c5cbc97dbbdd893", "url": "https://git.kernel.org/stable/c/60b75407c172e1f341a8a5097c5cbc97dbbdd893" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/92dd1f38d7db75374dcdaf54f1d79d67bffd54e5", "url": "https://git.kernel.org/stable/c/92dd1f38d7db75374dcdaf54f1d79d67bffd54e5" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9e1ef9396a1899925911b1729cb65665420268df", "url": "https://git.kernel.org/stable/c/9e1ef9396a1899925911b1729cb65665420268df" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/abfdf449fb3d7b42e85a1ad1c8694b768b1582f4", "url": "https://git.kernel.org/stable/c/abfdf449fb3d7b42e85a1ad1c8694b768b1582f4" } ], "release_date": "2026-02-18T14:53:30Z", "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-08-22T13:27:09.382499Z", "details": "Not affected: CONFIG_DRM_EXYNOS is disabled in shipped debian10els, so drivers/gpu/drm/exynos/exynos_drm_vidi.c fixed by CVE-2026-23227 is never compiled on any architecture.", "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" ] } ] } ] }