CVE-2026-34155

RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in a signature which covers only the first few bytes of the payload. Given such a bundle with a legitimate signature, an attacker can modify the part of the payload which is not covered by the signature. This issue has been patched in version 1.15.2.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441	Patch
https://github.com/rauc/rauc/releases/tag/v1.15.2	Release Notes
https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx	Mitigation Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pengutronix:rauc:*:*:*:*:*:*:*:*

History

03 Apr 2026, 15:53

Type	Values Removed	Values Added
CPE		cpe:2.3:a:pengutronix:rauc::::::::
First Time		Pengutronix Pengutronix rauc
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.3
References	~~() https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441 -~~	() https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441 - Patch
References	~~() https://github.com/rauc/rauc/releases/tag/v1.15.2 -~~	() https://github.com/rauc/rauc/releases/tag/v1.15.2 - Release Notes
References	~~() https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx -~~	() https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx - Mitigation, Patch, Vendor Advisory

31 Mar 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-31 14:16

Updated : 2026-04-03 15:53

NVD link : CVE-2026-34155

Mitre link : CVE-2026-34155

CVE.ORG link : CVE-2026-34155

JSON object : View

Products Affected

pengutronix

rauc

CWE

CWE-196

Unsigned to Signed Conversion Error

CWE-347

Improper Verification of Cryptographic Signature

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