{"id":"USN-8939-1","summary":"libxtst vulnerabilities","details":"It was discovered that libXtst did not properly handle certain RECORD\nreplies from the X server. A malicious X server could possibly use this\nissue to cause libXtst clients to crash, resulting in a denial of service.\n(CVE-2026-94286)\n\nTobias Stoeckmann discovered that libXtst did not properly handle certain\nmemory operations. A malicious X server could possibly use this issue to\ncause libXtst to access memory out of bounds, resulting in a denial of\nservice. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-7951)\n\nTobias Stoeckmann discovered that libXtst did not properly handle certain\nreplies from the X server. A malicious X server could possibly use this\nissue to cause libXtst to enter an infinite loop, resulting in a denial of\nservice. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-7952)","modified":"2026-10-19T23:43:14.789205080Z","published":"2026-10-19T17:17:18Z","upstream":["CVE-2016-7951","CVE-2016-7952","CVE-2026-94286","UBUNTU-CVE-2016-7951","UBUNTU-CVE-2016-7952","UBUNTU-CVE-2026-94286"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8939-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-7951"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-7952"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-94286"}],"affected":[{"package":{"name":"libxtst","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.2-1ubuntu0.1~esm1"}]}],"versions":["2:1.2.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxtst6","binary_version":"2:1.2.2-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.3-1ubuntu0.18.04.1~esm1"}]}],"versions":["2:1.2.3-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.2.3-1ubuntu0.18.04.1~esm1","binary_name":"libxtst6"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[]}}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.3-1ubuntu0.20.04.1~esm1"}]}],"versions":["2:1.2.3-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxtst6","binary_version":"2:1.2.3-1ubuntu0.20.04.1~esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.3-1ubuntu0.22.04.1"}]}],"versions":["2:1.2.3-1build2","2:1.2.3-1build3","2:1.2.3-1build4"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.2.3-1ubuntu0.22.04.1","binary_name":"libxtst6"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.3-1.1ubuntu0.1"}]}],"versions":["2:1.2.3-1.1","2:1.2.3-1.1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxtst6","binary_version":"2:1.2.3-1.1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.5-1ubuntu1"}]}],"versions":["2:1.2.5-1build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2:1.2.5-1ubuntu1","binary_name":"libxtst6"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.10","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}},{"package":{"name":"libxtst","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libxtst?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.2.5-1ubuntu0.1"}]}],"versions":["2:1.2.5-1","2:1.2.5-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2:1.2.5-1ubuntu0.1","binary_name":"libxtst6"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8939-1.json"}}],"schema_version":"1.9.0"}