{ "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/centos8.4els/vex/2023/cve-2023-38575-els_os-centos8_4els.json" } ], "tracking": { "current_release_date": "2026-08-01T21:50:11Z", "generator": { "date": "2026-08-01T21:50:10Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-38575-ELS_OS-CENTOS8.4ELS", "initial_release_date": "2023-01-01T00:00:00Z", "revision_history": [ { "date": "2023-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-06-04T20:43:31Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-06-05T20:41:21Z", "number": "3", "summary": "Update document" }, { "date": "2026-08-01T21:50:11Z", "number": "4", "summary": "Update document" } ], "status": "final", "version": "4" }, "title": "Security update on CVE-2023-38575" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version", "name": "microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "product": { "name": "microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "product_id": "microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20210216-1.20231114.1.el8_4?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "product": { "name": "microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "product_id": "microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20210216-1.20240813.1.el8_4?arch=x86_64&epoch=4" } } }, { "category": 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"relates_to_product_reference": "CentOS-8.4" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20251111-1.el8.x86_64 as a component of Community Enterprise Operating System 8.4", "product_id": "CentOS-8.4:microcode_ctl-4:20251111-1.el8.x86_64" }, "product_reference": "microcode_ctl-4:20251111-1.el8.x86_64", "relates_to_product_reference": "CentOS-8.4" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64 as a component of Community Enterprise Operating System 8.4", "product_id": "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64" }, "product_reference": "microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64", "relates_to_product_reference": "CentOS-8.4" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64 as a component of Community Enterprise Operating System 8.4", "product_id": "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64" }, "product_reference": "microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64", "relates_to_product_reference": "CentOS-8.4" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-38575", "cwe": { "id": "CWE-1303", "name": "Non-Transparent Sharing of Microarchitectural Resources" }, "notes": [ { "category": "description", "text": "Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.", "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": [ "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-38575" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/05/msg00003.html", "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00003.html" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20240405-0008/", "url": "https://security.netapp.com/advisory/ntap-20240405-0008/" }, { "category": "external", "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00982.html", "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00982.html" } ], "release_date": "2024-02-14T00:00:00Z", "remediations": [ { "category": "no_fix_planned", "date": "2026-06-05T20:39:56.061255Z", "details": "This is a local-only, side‑channel issue that requires an attacker to already execute code on the target system and yields no privilege escalation, integrity change, or availability impact—only potential information disclosure. Practical exploitation depends on manipulating and measuring shared return‑prediction state across contexts (typically requiring same‑core/SMT co‑residency and precise timing), conditions that are inherently hard to guarantee and noisy in managed server/VM workloads. Microcode updates are available from Intel and platform vendors, further reducing residual exposure, so it can be safely deprioritized relative to remotely exploitable or privilege‑escalation vulnerabilities.", "product_ids": [ "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" }, "products": [ "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230214.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20230512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20231114.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20240813.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250211.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20210216-1.20250512.1.el8_4.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.tuxcare.els1.x86_64", "CentOS-8.4:microcode_ctl-4:20251111-1.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }