{"id":"UBUNTU-CVE-2026-34155","details":"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.","modified":"2026-05-20T16:25:32.941750192Z","published":"2026-03-31T14:16:00Z","upstream":["CVE-2026-34155"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-34155"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-34155"},{"type":"REPORT","url":"https://github.com/rauc/rauc/security/advisories/GHSA-6hj7-q844-m2hx"},{"type":"REPORT","url":"https://github.com/rauc/rauc/commit/4fb7c798d6ae412344fb8f8d310d773046af3441"},{"type":"REPORT","url":"https://github.com/rauc/rauc/releases/tag/v1.15.2"}],"affected":[{"package":{"name":"rauc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/rauc?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1-2","1.2-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2-1","binary_name":"rauc"},{"binary_version":"1.2-1","binary_name":"rauc-service"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34155.json"}},{"package":{"name":"rauc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/rauc?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-1","1.5.1-1build1","1.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"rauc","binary_version":"1.6-1"},{"binary_name":"rauc-service","binary_version":"1.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34155.json"}},{"package":{"name":"rauc","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rauc?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1-1","1.10.1-2","1.11-1","1.11-1build3","1.11.3-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.11.3-2","binary_name":"rauc"},{"binary_name":"rauc-service","binary_version":"1.11.3-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34155.json"}},{"package":{"name":"rauc","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rauc?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13-1","1.13-3"],"ecosystem_specific":{"binaries":[{"binary_name":"rauc","binary_version":"1.13-3"},{"binary_name":"rauc-service","binary_version":"1.13-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34155.json"}},{"package":{"name":"rauc","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rauc?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13-3","1.14-1","1.15-1","1.15.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"rauc","binary_version":"1.15.1-1"},{"binary_version":"1.15.1-1","binary_name":"rauc-service"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34155.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}