{ "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-2026-53059-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-27T13:30:34Z", "generator": { "date": "2026-08-27T13:30:34Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-53059-ELS_OS-DEBIAN10ELS", "initial_release_date": "2026-06-24T17:17:00Z", "revision_history": [ { "date": "2026-06-24T17:17:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:53:26Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-08-27T13:30:34Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2026-53059" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Debian 10", "product": { "name": "Debian 10", "product_id": "Debian-10", "product_identification_helper": { "cpe": "cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Debian" } ], "category": "vendor", "name": "Software in the Public Interest, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "product": { "name": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "product_id": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/linux-headers-4.19.0-28-all-amd64@4.19.325-1%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": 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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-2026-53059", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm log: fix out-of-bounds write due to region_count overflow\n\nThe local variable region_count in create_log_context() is declared as\nunsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit).\nWhen a device-mapper target has a sufficiently large ti->len with a small\nregion_size, the division result can exceed UINT_MAX. The truncated\nvalue is then used to calculate bitset_size, causing clean_bits,\nsync_bits, and recovering_bits to be allocated far smaller than needed\nfor the actual number of regions.\n\nSubsequent log operations (log_set_bit, log_clear_bit, log_test_bit) use\nregion indices derived from the full untruncated region space, causing\nout-of-bounds writes to kernel heap memory allocated by vmalloc.\n\nThis can be reproduced by creating a mirror target whose region_count\noverflows 32 bits:\n\n dmsetup create bigzero --table '0 8589934594 zero'\n dmsetup create mymirror --table '0 8589934594 mirror \\\n core 2 2 nosync 2 /dev/mapper/bigzero 0 \\\n /dev/mapper/bigzero 0'\n\nThe status output confirms the truncation (sync_count=1 instead of\n4294967297, because 0x100000001 was truncated to 1):\n\n $ dmsetup status mymirror\n 0 8589934594 mirror 2 254:1 254:1 1/4294967297 ...\n\nThis leads to a kernel crash in core_in_sync:\n\n BUG: scheduling while atomic: (udev-worker)/9150/0x00000000\n RIP: 0010:core_in_sync+0x14/0x30 [dm_log]\n CR2: 0000000000000008\n Fixing recursive fault but reboot is needed!\n\nFix by widening the local region_count to sector_t and adding an\nexplicit overflow check before the value is assigned to lc->region_count.", "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-2026-53059" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/12bd5b88e91a02785244ff1d20fb157e96e9cdc8", "url": "https://git.kernel.org/stable/c/12bd5b88e91a02785244ff1d20fb157e96e9cdc8" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3ec74da927b4e171a6fc0e77b1188ba4d019af51", "url": "https://git.kernel.org/stable/c/3ec74da927b4e171a6fc0e77b1188ba4d019af51" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/44ab8875ae4a2842bde2d756bed195d375e0debb", "url": "https://git.kernel.org/stable/c/44ab8875ae4a2842bde2d756bed195d375e0debb" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/4ec8323b9f0764a14d532b1ae9b87f8a9fecb867", "url": "https://git.kernel.org/stable/c/4ec8323b9f0764a14d532b1ae9b87f8a9fecb867" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b455903eed4558982be0811f5b7f44f6bbc4ff57", "url": "https://git.kernel.org/stable/c/b455903eed4558982be0811f5b7f44f6bbc4ff57" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c20e36b7631d83e7535877f08af8b0af72c44b1a", "url": "https://git.kernel.org/stable/c/c20e36b7631d83e7535877f08af8b0af72c44b1a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/d4ac87567f86a55c3c92e9a5144dcd943a9772a1", "url": "https://git.kernel.org/stable/c/d4ac87567f86a55c3c92e9a5144dcd943a9772a1" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/defe483e47173768c227532694dc78cb65db5f09", "url": "https://git.kernel.org/stable/c/defe483e47173768c227532694dc78cb65db5f09" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:45114", "url": "https://access.redhat.com/errata/RHSA-2026:45114" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:45115", "url": "https://access.redhat.com/errata/RHSA-2026:45115" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:45116", "url": "https://access.redhat.com/errata/RHSA-2026:45116" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:45192", "url": "https://access.redhat.com/errata/RHSA-2026:45192" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:47248", "url": "https://access.redhat.com/errata/RHSA-2026:47248" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:52649", "url": "https://access.redhat.com/errata/RHSA-2026:52649" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:53989", "url": "https://access.redhat.com/errata/RHSA-2026:53989" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:55445", "url": "https://access.redhat.com/errata/RHSA-2026:55445" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56574", "url": "https://access.redhat.com/errata/RHSA-2026:56574" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-53059", "url": "https://access.redhat.com/security/cve/CVE-2026-53059" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2492277", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492277" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53059.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53059.json" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:59662", "url": "https://access.redhat.com/errata/RHSA-2026:59662" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:59663", "url": "https://access.redhat.com/errata/RHSA-2026:59663" } ], "release_date": "2026-06-24T17:17:00Z", "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-08-20T12:19:31.452299Z", "details": "The debian10els kernel is not affected by CVE-2026-53059: the vulnerable code was never introduced into this branch.", "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" ] } ] } ] }