CVE-2020-4788

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-11-20 · updated 2026-06-17

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.

Affected products

Fedoraproject Fedora: 32, 33
IBM AIX: 7.1.0, 7.1.5, 7.2.0, 7.2.3, 7.2.4, 7.2.5
IBM VIOS: 3.1.0, 3.1.1, 3.1.2
Oracle Communications Cloud Native Core Binding Support Function: 22.1.3
Oracle Communications Cloud Native Core Network Exposure Function: 22.1.1
Oracle Communications Cloud Native Core Policy: 22.2.0

References

http://www.openwall.com/lists/oss-security/2020/11/20/3
http://www.openwall.com/lists/oss-security/2020/11/23/1
https://exchange.xforce.ibmcloud.com/vulnerabilities/189296
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/
https://www.ibm.com/support/pages/node/6370729
https://www.oracle.com/security-alerts/cpujul2022.html
http://www.openwall.com/lists/oss-security/2020/11/20/3
http://www.openwall.com/lists/oss-security/2020/11/23/1
https://exchange.xforce.ibmcloud.com/vulnerabilities/189296
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/

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