{ "document": { "aggregate_severity": { "text": "Medium" }, "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/rhel7els/vex/2026/cve-2026-4647-els_os-rhel7els.json" } ], "tracking": { "current_release_date": "2026-08-22T12:31:54Z", "generator": { "date": "2026-08-22T12:31:54Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-4647-ELS_OS-RHEL7ELS", "initial_release_date": "2026-03-23T14:16:00Z", "revision_history": [ { "date": "2026-03-23T14:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-08T21:51:20Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-10T19:42:15Z", "number": "3", "summary": "Update document" }, { "date": "2026-06-13T02:54:41Z", "number": "4", "summary": "Update document" }, { "date": "2026-07-01T12:37:05Z", "number": "5", "summary": "Update document" }, { "date": "2026-07-14T12:38:31Z", "number": "6", "summary": "Update document" }, { "date": "2026-08-22T12:31:54Z", "number": "7", "summary": "Update document" } ], "status": "final", "version": "7" }, "title": "Security update on CVE-2026-4647" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version", "name": "binutils-devel-0:2.27-44.base.el7_9.1.x86_64", "product": { "name": "binutils-devel-0:2.27-44.base.el7_9.1.x86_64", "product_id": "binutils-devel-0:2.27-44.base.el7_9.1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/redhat/binutils-devel@2.27-44.base.el7_9.1?arch=x86_64" } } }, { "category": "product_version", "name": "binutils-0:2.27-44.base.el7_9.1.x86_64", "product": { "name": "binutils-0:2.27-44.base.el7_9.1.x86_64", "product_id": 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"binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686" }, "product_reference": "binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64" }, "product_reference": "binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64" }, "product_reference": "binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "relates_to_product_reference": "Red-Hat-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4647", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_affected": [ "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4647" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-4647", "url": "https://access.redhat.com/security/cve/CVE-2026-4647" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2450302", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450302" }, { "category": "external", "summary": "https://sourceware.org/bugzilla/show_bug.cgi?id=33919", "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33919" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:33527", "url": "https://access.redhat.com/errata/RHSA-2026:33527" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:39022", "url": "https://access.redhat.com/errata/RHSA-2026:39022" } ], "release_date": "2026-03-23T14:16:00Z", "remediations": [ { "category": "no_fix_planned", "date": "2026-06-12T13:06:33.671756Z", "details": "This issue is only reachable when a user deliberately runs a BFD-based utility (e.g., objdump/objcopy) on a crafted XCOFF file; Linux toolchains use ELF by default, so XCOFF parsing is invoked only when explicitly analyzing AIX/POWER binaries. The vulnerability is local with required user interaction and yields at most a crash or limited disclosure from the affected tool’s own memory, with no integrity impact or privilege escalation. In enterprise server/VM contexts where these developer utilities are not network‑facing and untrusted XCOFF inputs are uncommon, it represents low operational risk and can be safely deprioritized.", "product_ids": [ "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.x86_64" ] }, { "category": "no_fix_planned", "date": "2026-06-12T13:06:55.157337Z", "details": "This issue requires a user to locally open a crafted XCOFF object file with binutils tools (e.g., objdump/readelf), and XCOFF is an IBM AIX object format, so triggering it on Linux servers/VMs that handle ELF binaries occurs only when such input is explicitly processed. The flaw is an out-of-bounds read (no write), so impact is limited to crashing the tool or exposing small snippets of its own process memory, with no integrity impact, privilege escalation, or remote code execution. Given the non-network exposure, required user interaction, and format-specific trigger, this is a low-priority risk for centrally managed enterprise environments.", "product_ids": [ "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "version": "3.1" }, "products": [ "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-0:2.27-44.base.el7_9.1.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els2.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els4.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.i686", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.tuxcare.els6.x86_64", "Red-Hat-7:binutils-devel-0:2.27-44.base.el7_9.1.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }