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CVE-2022-4543

MEDIUM
5.5
CVSS Score
Published: January 11, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:21 AM UTC
2 products affected across 2 vendorsLinux KernelKernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
All versions
Kernel· Red Hat
60%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

ExploitMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2022/12/16/3
ExploitThird Party Advisory
Source: [email protected]
https://www.willsroot.io/2022/12/entrybleed.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-203

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