{"id":"UBUNTU-CVE-2025-46805","details":"Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.","modified":"2026-02-04T04:21:05.763372Z","published":"2025-05-08T00:00:00Z","related":["USN-7978-1"],"upstream":["CVE-2025-46805"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-46805"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-46805"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2025/05/12/1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7978-1"}],"affected":[{"package":{"name":"screen","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/screen@4.1.0~20120320gitdb59704-9ubuntu0.1~esm3?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.3-14ubuntu10","4.1.0~20120320gitdb59704-9","4.1.0~20120320gitdb59704-9ubuntu0.1~esm1","4.1.0~20120320gitdb59704-9ubuntu0.1~esm2","4.1.0~20120320gitdb59704-9ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"screen","binary_version":"4.1.0~20120320gitdb59704-9ubuntu0.1~esm3"}],"priority_reason":"Ubuntu does not install screen setuid-root"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}},{"package":{"name":"screen","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/screen@4.3.1-2ubuntu0.1+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-2","4.3.1-2build1","4.3.1-2ubuntu0.1","4.3.1-2ubuntu0.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"screen","binary_version":"4.3.1-2ubuntu0.1+esm1"}],"priority_reason":"Ubuntu does not install screen setuid-root"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}},{"package":{"name":"screen","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/screen@4.6.2-1ubuntu1.1+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.1-1","4.6.2-1","4.6.2-1ubuntu1","4.6.2-1ubuntu1.1","4.6.2-1ubuntu1.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.6.2-1ubuntu1.1+esm1","binary_name":"screen"}],"priority_reason":"Ubuntu does not install screen setuid-root"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}},{"package":{"name":"screen","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/screen@4.8.0-1ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.2-3build1","4.7.0-1","4.8.0-1","4.8.0-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"screen","binary_version":"4.8.0-1ubuntu0.1"}],"priority_reason":"Ubuntu does not install screen setuid-root"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}},{"package":{"name":"screen","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/screen@4.9.0-1ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.0-1ubuntu0.1"}]}],"versions":["4.8.0-6","4.8.0-6build1","4.8.0-7","4.9.0-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"screen","binary_version":"4.9.0-1ubuntu0.1"}],"priority_reason":"Ubuntu does not install screen setuid-root"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}},{"package":{"name":"screen","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/screen@4.9.1-1ubuntu1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.1-1ubuntu1"}]}],"versions":["4.9.0-4","4.9.1-1","4.9.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"screen","binary_version":"4.9.1-1ubuntu1"}],"priority_reason":"Ubuntu does not install screen setuid-root","availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-46805.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"low"}]}