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Vulnerability record · CVE-2023-20588 · published 8 August 2023

CVE-2023-20588: Debian linux divide by zero vulnerability

Debian · Debian Linux

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. 

5.5 CVSS 3.1 Medium EPSS 11% · top 4.2% CWE-369 · Divide by zero
5.5CVSS 3.1 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
47Affected product versions listed by NVD
56References
17 Jun 2026Last modified by NVD

Description

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. 

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

Affected products

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

References

LinkTags
http://www.openwall.com/lists/oss-security/2023/09/25/3 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/4 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/7 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/8 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/8 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/9 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/27/1 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/12 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/13 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/14 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/15 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/16 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/9 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/04/1 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/04/2 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/04/3 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/04/4 Mailing ListThird Party Advisory
http://xenbits.xen.org/xsa/advisory-439.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/AGZCACEHT6ZZZGG36QQMGROBM Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/DIOYP4ZOBML4RCUM3MHRFZUQL Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/KJTUVYZMP6BNF342DS3W7XGOG Mailing List
https://security.netapp.com/advisory/ntap-20240531-0005/
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7007 Vendor Advisory
https://www.debian.org/security/2023/dsa-5480 Third Party Advisory
https://www.debian.org/security/2023/dsa-5492 Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/3 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/4 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/7 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/25/8 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/8 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/26/9 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/09/27/1 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/12 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/13 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/03/14 Mailing ListThird Party Advisory

Track CVE-2023-20588 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2023-20588), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.