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CVE-2022-4543

Date: January 11, 2023

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 Score

Related Resources (6)

https://www.willsroot.io/2022/12/entrybleed.html
https://nvd.nist.gov/vuln/detail/CVE-2022-4543
https://www.openwall.com/lists/oss-security/2022/12/16/3
https://security-tracker.debian.org/tracker/CVE-2022-4543
https://access.redhat.com/security/cve/CVE-2022-4543
https://www.mend.io/vulnerability-database/CVE-2022-4543

Severity Score

Weakness Type (CWE)

Information Leak / Disclosure

CWE-200

Observable Discrepancy

CWE-203

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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