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Vulnerability record · CVE-2022-29900 · published 12 July 2022

CVE-2022-29900: Debian linux vulnerability

Debian · Debian Linux

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.

6.5 CVSS 3.1 Medium EPSS 3.9% · top 10.0% CWE-212 · CWE-212
6.5CVSS 3.1 base score, v2 2.1
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
126Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.

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

Affected products

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

References

LinkTags
https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANN
https://security.gentoo.org/glsa/202402-07
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1037
https://www.debian.org/security/2022/dsa-5207
https://www.secpod.com/blog/retbleed-intel-and-amd-processor-information-disclosure-vulnerability/
https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANN
https://security.gentoo.org/glsa/202402-07
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1037
https://www.debian.org/security/2022/dsa-5207
https://www.secpod.com/blog/retbleed-intel-and-amd-processor-information-disclosure-vulnerability/

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Related vulnerabilities

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

6.5CVE-2022-23825Debian linux exposure of resource to wrong sphere vulnerabilityAliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.EPSS 0.78%6.5CVE-2022-23823Amd athlon x4 750 firmware observable discrepancy vulnerabilityA potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentiall…EPSS 1.2%6.5CVE-2021-26341Amd athlon x4 940 firmware vulnerabilitySome AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.EPSS 0.32%5.6CVE-2021-26401Amd athlon x4 940 firmware vulnerabilityLFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.EPSS 0.29%5.5CVE-2022-23824Xen vulnerabilityIBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.EPSS 0.59%4.7CVE-2022-27672Amd athlon x4 750 firmware vulnerabilityWhen SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch po…EPSS 0.28%

Source: NIST National Vulnerability Database (record CVE-2022-29900), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.