CVE-2022-4543

Public on 2022-12-19
Modified on 2025-08-13
Description
A flaw named "EntryBleed" was found in the Linux Kernel Page Table Isolation (KPTI). This issue could allow a local attacker to leak KASLR base via prefetch side-channels based on TLB timing for Intel systems.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 kernel No Fix Planned
Amazon Linux 2 - Core kernel No Fix Planned
Amazon Linux 2 - Kernel-5.10 Extra kernel No Fix Planned
Amazon Linux 2 - Kernel-5.15 Extra kernel No Fix Planned
Amazon Linux 2 - Kernel-5.4 Extra kernel No Fix Planned
Amazon Linux 2023 kernel No Fix Planned

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2022-4543 Mitre: CVE-2022-4543