CVE-2022-4543

MEDIUM

Linux Kernel - Info Disclosure

Title source: llm
STIX 2.1

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.

Exploits (2)

nomisec WORKING POC 3 stars
by sunichi · poc
https://github.com/sunichi/cve-2022-4543-wrapper
nomisec WORKING POC
by ngtuonghung · poc
https://github.com/ngtuonghung/CVE-2022-4543-EntryBleed

References (2)

Core 2
Core References
Exploit, Mailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/16/3
Exploit, Third Party Advisory
https://www.willsroot.io/2022/12/entrybleed.html

Scores

CVSS v3 5.5
EPSS 0.0034
EPSS Percentile 57.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-200 CWE-203
Status published
Products (1)
linux/linux_kernel
Published Jan 11, 2023
Tracked Since Feb 18, 2026