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...
- Published
- Jan 11, 2023
- Updated
- Apr 8, 2025
- Assigning CNA
- redhat
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NLow · next 30 days
- Percentile
- 59.3%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
2C-based proof-of-concept exploit for CVE-2022-4543 (EntryBleed), a Linux kernel vulnerability enabling information disclosure and potential privilege escalation.
- cve-2022-4543-wrapperExploit
Wrapper for CVE-2022-4543 exploit that de-randomizes kernel base address via KASLR bypass, enabling reliable kernel exploitation on affected Linux systems.
Responsible use
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