CVE-2026-89169: CWE-347 Improper Verification of Cryptographic Signature in Debian live-boot
live-boot ff8867c allows attackers to bypass the dm-verity-enforce-roothash-signature protection mechanism when the .verity file is missing.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-89169 affects the Debian live-boot component (commit ff8867c). It involves improper verification of cryptographic signatures (CWE-347), specifically allowing attackers to bypass the dm-verity-enforce-roothash-signature protection mechanism when the .verity file is absent. This flaw could undermine the integrity verification of the root filesystem during boot.
Potential Impact
An attacker can bypass the dm-verity root hash signature enforcement if the .verity file is missing, potentially allowing unauthorized modifications to the root filesystem during boot. The CVSS 4.1 score indicates a medium impact with partial attack vector and required privileges, but no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the Debian vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data.
CVE-2026-89169: CWE-347 Improper Verification of Cryptographic Signature in Debian live-boot
Description
live-boot ff8867c allows attackers to bypass the dm-verity-enforce-roothash-signature protection mechanism when the .verity file is missing.
CVSS v4.0
Score 4.1medium
Affected software
Debian
live-boot
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-89169 affects the Debian live-boot component (commit ff8867c). It involves improper verification of cryptographic signatures (CWE-347), specifically allowing attackers to bypass the dm-verity-enforce-roothash-signature protection mechanism when the .verity file is absent. This flaw could undermine the integrity verification of the root filesystem during boot.
Potential Impact
An attacker can bypass the dm-verity root hash signature enforcement if the .verity file is missing, potentially allowing unauthorized modifications to the root filesystem during boot. The CVSS 4.1 score indicates a medium impact with partial attack vector and required privileges, but no user interaction needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the Debian vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-11T04:44:26.012Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa38b6791cc7f3848aefeea
Added to database: 09/11/2026, 05:02:31 UTC
Last enriched: 09/11/2026, 05:17:27 UTC
Last updated: 09/11/2026, 05:35:44 UTC
Views: 6
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