What’s Vulnerable › Vulnerabilities

CVE-2022-4543

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-11 · updated 2026-06-17
• Weakness: CWE-200

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 products

• Linux kernel: all versions

References

• https://www.openwall.com/lists/oss-security/2022/12/16/3
• https://www.willsroot.io/2022/12/entrybleed.html
• https://www.openwall.com/lists/oss-security/2022/12/16/3
• https://www.willsroot.io/2022/12/entrybleed.html

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