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Vulnerability record · CVE-2023-20569 · published 8 August 2023

CVE-2023-20569: Fedoraproject fedora observable discrepancy vulnerability

Fedoraproject · Fedora

A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

4.7 CVSS 3.1 Medium EPSS 7.3% · top 5.8% CWE-203 · Observable discrepancy
4.7CVSS 3.1 base score
7.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
23References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

150 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2023/08/08/4 Mailing List
http://xenbits.xen.org/xsa/advisory-434.html Third Party Advisory
https://comsec.ethz.ch/research/microarch/inception/ ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00013.html Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/HKKYIK2EASDNUV4I7EFJKNBVO Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/L4E4TZNMLYL2KETY23IPA43QX Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/PKK3IA63LSKM4EC3TN4UM6DDE Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/T7WO5JM74YJSYAE5RBV4DC6A4 Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20240605-0006/
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7005 Vendor Advisory
https://www.debian.org/security/2023/dsa-5475 Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/08/08/4 Mailing List
http://xenbits.xen.org/xsa/advisory-434.html Third Party Advisory
https://comsec.ethz.ch/research/microarch/inception/ ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00013.html Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/HKKYIK2EASDNUV4I7EFJKNBVO Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/L4E4TZNMLYL2KETY23IPA43QX Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/PKK3IA63LSKM4EC3TN4UM6DDE Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/T7WO5JM74YJSYAE5RBV4DC6A4 Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20240605-0006/
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7005 Vendor Advisory
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7005.html
https://www.debian.org/security/2023/dsa-5475 Third Party Advisory

Track CVE-2023-20569 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2023-20591Amd epyc 8024pn firmware vulnerabilityImproper re-initialization of IOMMU during the DRTM event may permit an untrusted platform configuration to persist, allowing an attacker to read or …EPSS 0.30%9.8CVE-2023-20520Amd epyc 72f3 firmware out-of-bounds write vulnerabilityImproper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potential…EPSS 0.79%9.8CVE-2021-26379Amd epyc 72f3 firmware vulnerabilityInsufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of i…EPSS 0.68%9.1CVE-2021-46756Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or A…EPSS 0.65%9.1CVE-2021-46762Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service.EPSS 0.35%8.8CVE-2021-46769Amd epyc 72f3 firmware improper input validation vulnerabilityInsufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code e…EPSS 0.78%8.4CVE-2021-26340Amd epyc 7001 firmware vulnerabilityA malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside…EPSS 0.24%8.2CVE-2021-26344Amd epyc 7203 firmware out-of-bounds write vulnerabilityAn out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the B…EPSS 0.16%

Source: NIST National Vulnerability Database (record CVE-2023-20569), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.