Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-15816: A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an attacker on the adjacent network who controls a rogue DHCP server can inject a command-substitution sequence that executes as root the next time dracut sources its emergency hook scripts during standard boot-failure handling.
Fixed packages 9
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | dracut | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-caps | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-config-generic | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-config-rescue | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-debuginfo | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-fips | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-fips-aesni | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-network | 0:033-535.amzn2.1.8 |
| Amazon Linux · 2 | dracut-tools | 0:033-535.amzn2.1.8 |
Vulnerabilities 1
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High 7.5
Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()
A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an atta…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-15816.html