CVE-2026-4647

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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."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en la biblioteca BFD de GNU Binutils, un componente ampliamente utilizado para manejar archivos binarios como archivos objeto y ejecutables. El problema ocurre al procesar archivos objeto XCOFF especialmente manipulados, donde un valor de tipo de reubicaci\u00f3n no se valida correctamente antes de ser utilizado. Esto puede causar que el programa lea memoria fuera de los l\u00edmites previstos. Como resultado, las herramientas afectadas pueden bloquearse o exponer contenidos de memoria no deseados, lo que lleva a una denegaci\u00f3n de servicio o a riesgos limitados de revelaci\u00f3n de informaci\u00f3n."}], "id": "CVE-2026-4647", "lastModified": "2026-11-05T22:18:44.900", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 4.2, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4647", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-23T15:53:29.812468Z", "version": "2.0.3"}}]}, "published": "2026-03-23T14:16:36.753", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:33527"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:39022"}, {"source": "secalert@redhat.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-4647"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450302"}, {"source": "secalert@redhat.com", "tags": ["Broken Link"], "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33919"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Chen Zhengzhe (Hangzhou Dianzi University) for reporting this issue.", "bugzilla": {"description": "binutils: Out-of-Bounds Read in XCOFF Relocation Processing in GNU Binutils BFD Library", "id": "2450302", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450302"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-4647", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "gcc-toolset-15-binutils", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "gdb", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "mingw-binutils", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "gdb", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gcc-toolset-14-binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gcc-toolset-14-gdb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gcc-toolset-15-binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gcc-toolset-15-gdb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gdb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mingw-binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "gcc-toolset-14-binutils", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "gcc-toolset-15-binutils", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "gdb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mingw-binutils", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-03-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4647\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4647\nhttps://sourceware.org/bugzilla/show_bug.cgi?id=33919"], "statement": "This is a MODERATE impact vulnerability. The flaw in GNU Binutils BFD library occurs when processing specially crafted XCOFF object files, leading to out-of-bounds memory access. This could result in application crashes or information disclosure. Exploitation requires an attacker to provide a malicious XCOFF file to a vulnerable application.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 10", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "Red Hat OpenShift Container Platform 4", "source": "cna", "vendor": "Red Hat"}, "product": "openshift_container_platform", "vendor": "redhat"}], "analysis": {"en": {"generated_at": "2026-04-09T18:30:40.973935+00:00", "value": {"mitigation_remediation": ["Install the latest patched version of GNU Binutils from Red\u00a0Hat for all affected distributions and OpenShift images", "Update any system components or custom tools that rely on Binutils to a version that includes the fix", "If operating with untrusted XCOFF files, restrict or disable XCOFF processing by configuring applications or removing the related utilities", "Verify that no legacy binaries requiring XCOFF are in use and rebuild them against the updated library if necessary"], "summary": {"action": "Immediate Patch", "impact": "Denial of Service and limited information disclosure"}, "threat_synthesis": {"affected_systems": "The vulnerability affects a wide range of Red Hat products that ship with the Binutils library, including Red\u00a0Hat Enterprise Linux versions 6 through 10, Red\u00a0Hat Hardened Images, and Red\u00a0Hat OpenShift Container Platform 4. The vulnerability is present in the GNU Binutils component itself; specific version details were not supplied by the CNA data and therefore are not listed.", "description_and_impact": "A flaw in the GNU Binutils BFD library allows an attacker to craft an XCOFF object file with an invalid relocation type. When this file is processed, the relocation type is not properly validated, leading to a read outside the intended memory bounds. This out-of-bounds read can cause the processing program to crash or leak memory contents that were not intended for disclosure.", "risk_and_exploitability": "The CVSS score of 6.1 indicates a medium severity impact. The EPSS score is below 1% and the vulnerability is not currently listed in CISA\u2019s KEV catalog, suggesting a low likelihood of widespread exploitation. The attack vector is inferred to be based on the delivery of a malicious XCOFF file, which could be supplied remotely to systems that consume such files or locally by an attacker with write access to the target system. Given the lack of an official workaround, systems remain at risk until the library is updated or the vulnerability is mitigated."}}}}, "created": "2026-03-24T10:34:00.002691+00:00", "updated": "2026-04-10T09:46:17.347531+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux", "redhat$PRODUCT$openshift_container_platform"]}