Detections
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Chainguard: linux-qemu-melange: security update to 6.18.49-r2

medium Tenable Self-Hosted Container Security Plugin ID 472542

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Triple fault if restore
 host CR3 fails on nested #VMEXIT If loading L1's CR3 fails on a nested #VMEXIT, nested_svm_vmexit()
 returns an error code that is ignored by most callers, and continues to run L1 with corrupted state. A
 sane recovery is not possible in this case, and HW behavior is to cause a shutdown. Inject a triple fault
 instead, and do not return early from nested_svm_vmexit(). Continue cleaning up the vCPU state (e.g. clear
 pending exceptions), to handle the failure as gracefully as possible. From the APM: Upon #VMEXIT, the
 processor performs the following actions in order to return to the host execution context: ... if (illegal
 host state loaded, or exception while loading host state) shutdown else execute first host instruction
 following the VMRUN Remove the return value of nested_svm_vmexit(), which is mostly unchecked anyway.
 (CVE-2026-46032)

Solution

Update the linux-qemu-melange library and its related packages to version 6.18.49-r2 or later.

Plugin Details

Severity: Medium

ID: 472542

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-46032

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-46032