CVE-2022-42331

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.

Score

CVSS 3.1 5.5 Medium

Status

Modified - security@xen.org

Published

2023-03-21

Last modified

2025-02-13

Affected products

• Fedora (Fedoraproject)
• Xen (Xen)

References

• http://www.openwall.com/lists/oss-security/2023/03/21/3
• http://xenbits.xen.org/xsa/advisory-429.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOX…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMG…
• https://security.gentoo.org/glsa/202402-07
• https://www.debian.org/security/2023/dsa-5378
• https://xenbits.xenproject.org/xsa/advisory-429.txt