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

medium Tenable Self-Hosted Container Security Plugin ID 472218

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: selinux: allow multiple opens of
 /sys/fs/selinux/policy Currently there can only be a single open of /sys/fs/selinux/policy at any time.
 This allows any process to block any other process from reading the kernel policy. The original motivation
 seems to have been a mix of preventing an inconsistent view of the policy size and preventing userspace
 from allocating kernel memory without bound, but this is arguably equally bad. Eliminate the policy_opened
 flag and shrink the critical section that the policy mutex is held. While we are making changes here, drop
 a couple of extraneous BUG_ONs. (CVE-2026-46302)

Solution

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

Plugin Details

Severity: Medium

ID: 472218

Version: Revision 1.2

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

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-2026-46302

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: 6/8/2026

Reference Information

CVE: CVE-2026-46302