Reachable Assertion Affecting bind-chroot package, versions <32:9.11.4-26.P2.amzn2.13.18


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.57% (45th percentile)

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  • Snyk IDSNYK-AMZN2-BINDCHROOT-20847808
  • published13 Oct 2026
  • disclosed16 Sept 2026

Introduced: 16 Sep 2026

CVE-2026-19666  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 bind-chroot to version 32:9.11.4-26.P2.amzn2.13.18 or higher.
This issue was patched in ALAS2-2026-3995.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-chroot package and not the bind-chroot package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

On a resolver configured to use dns64, if an applicable answer from the authoritative server is malformed in a specific way, the resolver named process will exit unexpectedly. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

CVSS Base Scores

version 3.1