CVE-2023-20588: Speculative Leaks
Vulnerability summary
CVE-2023-20588 is a medium (CVSS 5.5) Divide By Zero vulnerability in amd athlon_gold_3150g_firmware. EPSS estimates a 11.15% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 43 · Related 40Timeline
- 08-08-2023PublishedVulnerability first disclosed.
- 17-10-2024Last modifiedVulnerability information updated.
Description
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
11.15%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
No change 0.00 pp
From 11.15% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu105 products
- linuxAll versions (No fix recorded) | < 4.4.0-250.284 | < 4.15.0-221.232 | < 5.4.0-163.180 | < 5.15.0-84.93
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.4.0-1127.133 | < 4.4.0-1164.179 | < 4.15.0-1164.177 | < 5.4.0-1110.119 | < 5.15.0-1045.50
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Amd36 products
- athlon_gold_3150g_firmwarena
- athlon_gold_3150ge_firmwarena
- athlon_gold_pro_3150g_firmwarena
- athlon_gold_pro_3150ge_firmwarena
- athlon_pro_300ge_firmwarena
Microsoft13 products
- windows_10_1507< 10.0.10240.20345
- windows_10_1607< 10.0.14393.6529
- windows_10_1809< 10.0.17763.5206
- windows_10_21h2< 10.0.19044.3803
- windows_10_22h2< 10.0.19045.3803
Debian3 products
- linux< 6.1.52-1 | < 6.4.13-1
- xen< 4.17.2+76-ge1f9cb16e2-1~deb12u1 | < 4.17.2+55-g0b56bed864-1
- debian_linuxEOL10.0 | 11.0 | 12.0
Alpine1 product
- xen< 4.15.5-r2 | < 4.16.5-r2 | < 4.17.2-r2
Fedoraproject1 product
- fedoraEOL37 | 38 | 39
Xen1 product
- xenna
7 vendors · 160 products
References
46 links- www.debian.org/security/2023/dsa-5480Third Party Advisory
- www.debian.org/security/2023/dsa-5492Third Party Advisory
- xenbits.xen.org/xsa/advisory-439.htmlThird Party Advisory
Show all 46 references
- lists.fedoraproject.org/archives/…Mailing List
- lists.fedoraproject.org/archives/…Mailing List
- lists.fedoraproject.org/archives/…Mailing List