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CVE-2026-89169

Quick assessment

Affected

Debian live-boot

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Debian live-boot是美国Debian社区的一个支持从只读介质启动Live系统的启动管理软件。 Debian live-boot ff8867c版本存在加密问题漏洞，该漏洞源于.verity文件缺失时对dm-verity-enforce-roothash-signature保护机制的验证不当，可能导致攻击者绕过该保护机制。

CVSS 4.1 · Medium EPSS 0.15% · P4 Updated Sep 12, 2026

Possible ATT&CK Techniques 1 AI

T1558 · Steal or Forge Kerberos Tickets

Affected Version Matrix 1

Vendor	Product	Version Range	Status
Debian	live-boot	`ff8867c4e2d62e497cb895b15b7d6d518d5adff1`	affected

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I. Basic Information for CVE-2026-89169

Vulnerability Information

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Vulnerability Title

N/A

Source: CVE Program / CVE List V5

Vulnerability Description

live-boot ff8867c allows attackers to bypass the dm-verity-enforce-roothash-signature protection mechanism when the .verity file is missing.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Source: CVE Program / CVE List V5

Vulnerability Type

密码学签名的验证不恰当

Source: CVE Program / CVE List V5

Vulnerability Title

Debian live-boot 加密问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Debian	live-boot	ff8867c4e2d62e497cb895b15b7d6d518d5adff1	-

II. Public POCs for CVE-2026-89169

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-89169

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Patches & Fixes for CVE-2026-89169 (1)

🔗 components/9990-overlay.sh · ff8867c4e2d62e497cb895b15b7d6d518d5adff1 · Debian Live Team / live-boot · GitLab Read full article

Vendor Advisories for CVE-2026-89169 (1)

🔗 #1146422 - live-boot: dm-verity related parameters ineffective when .verity file is removed - Debian Bug report logs Read full article

https://www.cve.org/CVERecord?id=CVE-2026-89169

IV. Related Vulnerabilities

Same vendor: Debian

Same weakness: CWE-347