{"id":"UBUNTU-CVE-2026-25061","details":"tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past `tim.bitmap[251]`. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in `handle_beacon()` and related handlers. As of time of publication, no known patches are available.","modified":"2026-05-20T16:24:46.333409677Z","published":"2026-01-29T22:15:00Z","upstream":["CVE-2026-25061"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-25061"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-25061"},{"type":"REPORT","url":"https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6"}],"affected":[{"package":{"name":"tcpflow","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0+dfsg-2","1.4.3+repack1-1","1.4.4+repack1-1","1.4.4+repack1-2","1.4.4+repack1-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpflow","binary_version":"1.4.4+repack1-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4+repack1-3","1.4.5+repack1-1","1.4.5+repack1-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.5+repack1-1ubuntu0.1","binary_name":"tcpflow"},{"binary_name":"tcpflow-nox","binary_version":"1.4.5+repack1-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.5+repack1-4","1.4.5+repack1-4build1","1.4.5+repack1-4build2","1.4.5+repack1-4ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.5+repack1-4ubuntu0.18.04.1","binary_name":"tcpflow"},{"binary_name":"tcpflow-nox","binary_version":"1.4.5+repack1-4ubuntu0.18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.2+repack1-1build1","1.5.2+repack1-1build2"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpflow","binary_version":"1.5.2+repack1-1build2"},{"binary_name":"tcpflow-nox","binary_version":"1.5.2+repack1-1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.1-1","1.6.1-2","1.6.1-2build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.1-2build1","binary_name":"tcpflow"},{"binary_name":"tcpflow-nox","binary_version":"1.6.1-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.1-3","1.6.1-3build1","1.6.1-3build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.1-3build2","binary_name":"tcpflow"},{"binary_name":"tcpflow-nox","binary_version":"1.6.1-3build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.1-3build2"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpflow","binary_version":"1.6.1-3build2"},{"binary_name":"tcpflow-nox","binary_version":"1.6.1-3build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.1-3build2","1.6.1-3build3"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpflow","binary_version":"1.6.1-3build3"},{"binary_name":"tcpflow-nox","binary_version":"1.6.1-3build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25061.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"typ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