CVE-2022-42331

Description

x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.04%

Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory xen.org Vendor Advisory xenproject.org

Affected: Xen xen

References

Link	Tags
https://xenbits.xenproject.org/xsa/advisory-429.txt	vendor advisory
http://www.openwall.com/lists/oss-security/2023/03/21/3	third party advisory mailing list
http://xenbits.xen.org/xsa/advisory-429.html	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/	vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/	vendor advisory mailing list third party advisory
https://www.debian.org/security/2023/dsa-5378	third party advisory vendor advisory
https://security.gentoo.org/glsa/202402-07

Frequently Asked Questions

What is the severity of CVE-2022-42331?: CVE-2022-42331 has been scored as a medium severity vulnerability.
How to fix CVE-2022-42331?: To fix CVE-2022-42331, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-42331 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-42331 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-42331?: CVE-2022-42331 affects Xen xen.

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