CVE-2020-4788: fedoraproject fedora
Vulnerability summary
CVE-2020-4788 is a medium (CVSS 5.1) vulnerability in fedoraproject fedora. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 33.3% of scored vulnerabilities.
Not severe (CVSS 5.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 27 · Related 25Timeline
- 20-11-2020PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVDNIST4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.1MediumCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVDNIST5.1MediumCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.39% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu39 products
- linuxAll versions (No fix recorded) | < 4.4.0-197.229 | < 4.15.0-126.129 | < 5.4.0-56.62
- linux-aws< 4.4.0-1083.87 | < 4.4.0-1119.133 | < 5.4.0-1032.33
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.4< 5.4.0-1032.33~18.04.1
Oracle3 products
Ibm2 products
Debian1 product
- linux< 5.9.11-1
Fedoraproject1 product
- fedoraEOL32 | 33
5 vendors · 46 products
References
16 links- www.openwall.com/lists/oss-security/2020/11/20/3Mailing ListX Refsource MLISTPatchThird Party Advisory
- git.kernel.org/pub/…REPORT