{"id":"UBUNTU-CVE-2026-1940","details":"An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 \u003e size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.","modified":"2026-05-07T13:54:21.186402Z","published":"2026-03-23T22:16:00Z","upstream":["CVE-2026-1940"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-1940"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-1940"},{"type":"REPORT","url":"https://gstreamer.freedesktop.org/security/sa-2026-0001.html"}],"affected":[{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0@1.2.4-1~ubuntu1.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-3ubuntu5","1.2.1-1ubuntu1","1.2.1-1ubuntu2","1.2.2-1ubuntu1","1.2.2-1ubuntu2","1.2.2-1ubuntu4","1.2.3-1ubuntu1","1.2.3-1ubuntu2","1.2.4-1~ubuntu1","1.2.4-1~ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-hybris","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_name":"gstreamer1.0-plugins-bad-faad","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_name":"gstreamer1.0-plugins-bad-videoparsers","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.2.4-1~ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0@1.8.3-1ubuntu0.2+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1ubuntu1","1.6.1-1ubuntu1","1.6.2-1ubuntu1","1.7.1-1ubuntu1","1.7.1-1ubuntu3","1.7.1-1ubuntu4","1.7.2-1ubuntu1","1.7.90-1ubuntu2","1.7.91-1ubuntu1","1.8.0-1ubuntu1","1.8.1-1ubuntu0.1","1.8.2-1ubuntu0.1","1.8.2-1ubuntu0.2","1.8.3-1ubuntu0.2","1.8.3-1ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gst-plugins-bad-1.0","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-hybris","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad-faad","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad-videoparsers","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.8.3-1ubuntu0.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0@1.14.5-0ubuntu1~18.04.1+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.3-1ubuntu1","1.12.3-1ubuntu2","1.12.3-2ubuntu1","1.12.4-2ubuntu1","1.12.4-2ubuntu2","1.13.1-1ubuntu1","1.13.91-1ubuntu1","1.14.0-1ubuntu1","1.14.1-1ubuntu1~ubuntu18.04.1","1.14.4-1ubuntu1~ubuntu18.04.1","1.14.5-0ubuntu1~18.04.1","1.14.5-0ubuntu1~18.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gst-plugins-bad-1.0","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_name":"gstreamer1.0-opencv","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_name":"libgstreamer-opencv1.0-0","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0@1.16.3-0ubuntu1.1+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-1ubuntu1","1.16.1-1ubuntu3","1.16.1-1ubuntu4","1.16.1-1ubuntu5","1.16.1-1ubuntu6","1.16.1-1ubuntu8","1.16.2-1ubuntu1","1.16.2-1ubuntu2","1.16.2-2ubuntu1","1.16.2-2.1ubuntu1","1.16.3-0ubuntu1","1.16.3-0ubuntu1.1","1.16.3-0ubuntu1.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gst-plugins-bad-1.0","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"gstreamer1.0-opencv","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"libgstreamer-opencv1.0-0","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.16.3-0ubuntu1.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0@1.20.3-0ubuntu1.1+esm2?arch=source&distro=esm-apps/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