CVEvulnerability

CVE-2022-42331

5.5 MEDIUM Published 2023-03-21 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2023-03-21
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Affected configurations

• xen xen (>= 4.5.0 <= 4.17.0) • fedoraproject fedora 37 • fedoraproject fedora 38

References

http://www.openwall.com/lists/oss-security/2023/03/21/3 Mailing List, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-429.html Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202402-07 security.gentoo.org
https://www.debian.org/security/2023/dsa-5378 Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-429.txt Vendor Advisory
http://www.openwall.com/lists/oss-security/2023/03/21/3 Mailing List, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-429.html Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/ Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/ Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202402-07 security.gentoo.org
https://www.debian.org/security/2023/dsa-5378 Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-429.txt Vendor Advisory