PT-2024-13384 · Xen+2 · Xen+2

Jan Beulich · Published 2024-02-27 · Updated 2025-04-26 · CVE-2023-46841

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen (affected versions not specified)

Description The issue is related to the interaction between the Control-flow Enforcement Technology (CET) and the Xen emulation. CET is a hardware feature designed to protect against Return Oriented Programming attacks, and it uses Shadow Stacks (CET-SS) to store return addresses. When certain memory accesses need to be intercepted by Xen, the necessary emulation involves replaying the instruction, which may raise exceptions. However, the recovery process involves removing a call frame from the traditional stack, but the counterpart operation for the shadow stack is missing. This can cause a hypervisor crash, leading to a Denial of Service (DoS) of the entire host.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2023-46841

DSA-5836-1

MGASA-2024-0115

OPENSUSE-SU-2024:13745-1

OPENSUSE-SU-2024_1102-1

SUSE-SU-2024:0830-1

SUSE-SU-2024:0934-1

SUSE-SU-2024:0935-1

SUSE-SU-2024:1102-1

Affected Products

Debian

Suse

Xen

References · 46

• https://advisories.mageia.org/MGASA-2024-0115.html · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1102-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2023-46841 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-46841 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-46841 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:0935-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-46841 · Security Note
• https://osv.dev/vulnerability/MGASA-2024-0115 · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-451.html · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/ZON4TLXG7TG4A2XZG563JMVTGQW4SF3A · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-46841 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:0830-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-46841 · Vendor Advisory
• https://xenbits.xenproject.org/xsa/advisory-451.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-46841 · Security Note