{"id":"UBUNTU-CVE-2026-24683","details":"FreeRDP is a free implementation of the Remote Desktop Protocol. ainput_send_input_event caches channel_callback in a local variable and later uses it without synchronization; a concurrent channel close can free or reinitialize the callback, leading to a use after free. Prior to 3.22.0, This vulnerability is fixed in 3.22.0.","modified":"2026-04-22T20:28:35.544841Z","published":"2026-02-09T19:15:00Z","related":["USN-8042-1"],"upstream":["CVE-2026-24683"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-24683"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-24683"},{"type":"REPORT","url":"https://github.com/FreeRDP/FreeRDP/commit/d9ca272dce7a776ab475e9b1a8e8c3d2968c8486"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8042-1"}],"affected":[{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-0ubuntu0.20.04.2+esm3?arch=source&distro=esm-infra/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"}]}],"versions":["2.0.0~git20190204.1.2693389a+dfsg1-1","2.0.0~git20190204.1.2693389a+dfsg1-2","2.0.0~git20190204.1.2693389a+dfsg1-2build1","2.0.0~git20190204.1.2693389a+dfsg1-2build2","2.1.1+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.2","2.2.0+dfsg1-0ubuntu0.20.04.3","2.2.0+dfsg1-0ubuntu0.20.04.4","2.2.0+dfsg1-0ubuntu0.20.04.5","2.2.0+dfsg1-0ubuntu0.20.04.6","2.6.1+dfsg1-0ubuntu0.20.04.1","2.6.1+dfsg1-0ubuntu0.20.04.2","2.6.1+dfsg1-0ubuntu0.20.04.2+esm1","2.6.1+dfsg1-0ubuntu0.20.04.2+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"freerdp2-wayland"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"freerdp2-x11"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libfreerdp-client2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libfreerdp-server2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libfreerdp-shadow-subsystem2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libfreerdp-shadow2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libfreerdp2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libuwac0-0"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libwinpr-tools2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"libwinpr2-2"},{"binary_version":"2.6.1+dfsg1-0ubuntu0.20.04.2+esm3","binary_name":"winpr-utils"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24683.json"}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.10?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1+dfsg1-3ubuntu2.10"}]}],"versions":["2.3.0+dfsg1-2build1","2.3.0+dfsg1-2ubuntu1","2.3.0+dfsg1-2ubuntu2","2.4.1+dfsg1-1","2.4.1+dfsg1-1ubuntu1","2.4.1+dfsg1-1ubuntu2","2.5.0+dfsg1-1","2.6.0+dfsg1-1","2.6.1+dfsg1-1","2.6.1+dfsg1-3","2.6.1+dfsg1-3ubuntu1","2.6.1+dfsg1-3ubuntu2","2.6.1+dfsg1-3ubuntu2.1","2.6.1+dfsg1-3ubuntu2.2","2.6.1+dfsg1-3ubuntu2.3","2.6.1+dfsg1-3ubuntu2.4","2.6.1+dfsg1-3ubuntu2.5","2.6.1+dfsg1-3ubuntu2.6","2.6.1+dfsg1-3ubuntu2.7","2.6.1+dfsg1-3ubuntu2.8","2.6.1+dfsg1-3ubuntu2.9"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"freerdp2-wayland"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"freerdp2-x11"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libfreerdp-client2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libfreerdp-server2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libfreerdp-shadow-subsystem2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libfreerdp-shadow2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libfreerdp2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libuwac0-0"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libwinpr-tools2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"libwinpr2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.10","binary_name":"winpr-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24683.json"}},{"package":{"name":"freerdp3","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/freerdp3@3.5.1+dfsg1-0ubuntu1.2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.1+dfsg1-0ubuntu1.2"}]}],"versions":["3.4.0+dfsg1-0ubuntu2","3.4.0+dfsg1-0ubuntu3","3.4.0+dfsg1-0ubuntu4","3.5.0+dfsg1-0ubuntu1","3.5.1+dfsg1-0ubuntu1","3.5.1+dfsg1-0ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"freerdp3-shadow-x11"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"freerdp3-wayland"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"freerdp3-x11"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libfreerdp-client3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libfreerdp-server3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libfreerdp-shadow-subsystem3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libfreerdp-shadow3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libfreerdp3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libwinpr-tools3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"libwinpr3-3"},{"binary_version":"3.5.1+dfsg1-0ubuntu1.2","binary_name":"winpr3-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24683.json"}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.11.5+dfsg1-1ubuntu0.1~esm5?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.5+dfsg1-1ubuntu0.1~esm5"}]}],"versions":["2.10.0+dfsg1-1.1ubuntu1","2.11.2+dfsg1-1","2.11.2+dfsg1-1build1","2.11.2+dfsg1-1build3","2.11.5+dfsg1-1build1","2.11.5+dfsg1-1build2","2.11.5+dfsg1-1ubuntu0.1~esm1","2.11.5+dfsg1-1ubuntu0.1~esm2","2.11.5+dfsg1-1ubuntu0.1~esm3","2.11.5+dfsg1-1ubuntu0.1~esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"freerdp2-wayland"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"freerdp2-x11"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libfreerdp-client2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libfreerdp-server2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libfreerdp-shadow-subsystem2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libfreerdp-shadow2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libfreerdp2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libuwac0-0t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libwinpr-tools2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"libwinpr2-2t64"},{"binary_version":"2.11.5+dfsg1-1ubuntu0.1~esm5","binary_name":"winpr-utils"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24683.json"}},{"package":{"name":"freerdp3","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/freerdp3@3.16.0+dfsg-2ubuntu0.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.16.0+dfsg-2ubuntu0.1"}]}],"versions":["3.14.0+dfsg-1ubuntu1","3.15.0+dfsg-2.1","3.16.0+dfsg-1ubuntu1","3.16.0+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-proxy"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-proxy-modules"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-sdl"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-shadow-x11"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-wayland"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"freerdp3-x11"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp-client3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp-server-proxy3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp-server3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp-shadow-subsystem3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp-shadow3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libfreerdp3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libwinpr-tools3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"libwinpr3-3"},{"binary_version":"3.16.0+dfsg-2ubuntu0.1","binary_name":"winpr3-utils"}],"availability":"No 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