What is CVE-2022-4543?

CVE-2022-4543 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2023-01-11.

How severe is CVE-2022-4543?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2022-4543 known to be exploited?

33 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Linux Kernel

CVE-2022-4543

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.

Vulnerability class: Information Disclosure

EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Linux Linux_kernel
N/a Linux Kernel — versions all versions

Weakness classification (CWE)

Public proof-of-concept exploits

References

secalert@redhat.com (Exploit, Mailing List, Third Party Advisory)
secalert@redhat.com (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-4543?: CVE-2022-4543 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2023-01-11.
How severe is CVE-2022-4543?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-4543 known to be exploited?: 33 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.