Integer Overflow or Wraparound Affecting rauc/rauc package, versions [,1.15.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Apr 2026
- disclosed31 Mar 2026
- creditYosuke Tanimoto, Akihiko Nishikawa
Introduced: 31 Mar 2026
CVE-2026-34155 (opens in a new tab)How to fix?
Upgrade rauc/rauc to version 1.15.2 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the Plain Bundles processing when handling payloads exceeding 2 GiB. An attacker can alter unsigned portions of the payload by crafting a bundle where only the initial segment is covered by a legitimate signature, allowing unauthorized modification of the remaining data.