CVE-2026-46302 Affecting linux-qemu-melange package, versions <6.18.49-r2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.1% (1st percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LINUXQEMUMELANGE-19667627
  • published10 Sept 2026
  • disclosed8 Jun 2026

Introduced: 8 Jun 2026

CVE-2026-46302  (opens in a new tab)

How to fix?

Upgrade Chainguard linux-qemu-melange to version 6.18.49-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-qemu-melange package and not the linux-qemu-melange package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1