CVE-2022-4543 — MEDIUM (5.5)

Vulnerability 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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	All versions

Related Weaknesses (CWE)

CWE-200 CWE-203

References

https://www.openwall.com/lists/oss-security/2022/12/16/3ExploitMailing ListThird Party Advisory
https://www.willsroot.io/2022/12/entrybleed.htmlExploitThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/16/3ExploitMailing ListThird Party Advisory
https://www.willsroot.io/2022/12/entrybleed.htmlExploitThird Party Advisory

FAQ

What is CVE-2022-4543?

CVE-2022-4543 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...

How severe is CVE-2022-4543?

CVE-2022-4543 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2022-4543?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.