{"id":"UBUNTU-CVE-2026-120457","details":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","modified":"2026-11-04T03:30:03.789480087Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120457"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120457"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120457"},{"type":"REPORT","url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/blob/v1.1.7/src/decode.c#L556-L586"},{"type":"REPORT","url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/issues/64"},{"type":"REPORT","url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/pull/66"},{"type":"REPORT","url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/releases/tag/v1.1.7"},{"type":"REPORT","url":"https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/libaec-through-1.1.7-out-of-bounds-read-via-m-se-decode-second-extension-decoder"}],"affected":[{"package":{"name":"libaec","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libaec-tools","binary_version":"0.3.2-1"},{"binary_version":"0.3.2-1","binary_name":"libaec0"},{"binary_version":"0.3.2-1","binary_name":"libsz2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.3.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libaec-tools","binary_version":"0.3.2-2"},{"binary_name":"libaec0","binary_version":"0.3.2-2"},{"binary_name":"libsz2","binary_version":"0.3.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libaec-tools","binary_version":"1.0.4-1"},{"binary_version":"1.0.4-1","binary_name":"libaec0"},{"binary_name":"libsz2","binary_version":"1.0.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-3","1.0.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libaec-tools","binary_version":"1.0.6-1"},{"binary_version":"1.0.6-1","binary_name":"libaec0"},{"binary_name":"libsz2","binary_version":"1.0.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.6-1","1.1.2-1","1.1.2-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libaec0","binary_version":"1.1.2-1build1"},{"binary_version":"1.1.2-1build1","binary_name":"libsz2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.5-1","1.1.7-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.7-1","binary_name":"libaec0"},{"binary_name":"libsz2","binary_version":"1.1.7-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}},{"package":{"name":"libaec","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libaec?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.1.4-2","1.1.5-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.5-1","binary_name":"libaec0"},{"binary_version":"1.1.5-1","binary_name":"libsz2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120457.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}