rauc: RAUC controls the update process on embedded Linux systems
CVE-2026-34155 is fixed in 4 products on 1 platform, first by FEDORA-2026-F0293B845E, released March 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rauc · Debian 13.5 (trixie) | 1.13-3+deb13u1 | DEBIAN-CVE-2026-34155 | Mar 31, 2026 |
| rauc · Debian 14 | 1.15.2-1 | DEBIAN-CVE-2026-34155 | Mar 31, 2026 |
| rauc · Fedora 43 | 1.15.2-1.fc43 | FEDORA-2026-F0293B845E | Mar 30, 2026 |
| rauc-debuginfo · Fedora 43 | 1.15.2-1.fc43 | FEDORA-2026-F0293B845E | Mar 30, 2026 |
| rauc-debugsource · Fedora 43 | 1.15.2-1.fc43 | FEDORA-2026-F0293B845E | Mar 30, 2026 |
| rauc-doc · Fedora 43 | 1.15.2-1.fc43 | FEDORA-2026-F0293B845E | Mar 30, 2026 |
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