{"id":"UBUNTU-CVE-2026-119600","details":"tcpflow through 1.6.1 contains an out-of-bounds read vulnerability that allows unauthenticated attackers to read process memory by sending packets with forged IP payload lengths. Attackers can inject crafted IPv4 or IPv6 TCP packets into captured traffic or pcap files to leak adjacent memory into reconstructed flow files or crash tcpflow.","modified":"2026-11-04T03:30:32.269364530Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-119600"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-119600"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-119600"},{"type":"REPORT","url":"https://github.com/simsong/tcpflow/issues/279"},{"type":"REPORT","url":"https://github.com/simsong/tcpflow"},{"type":"REPORT","url":"https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L747"},{"type":"REPORT","url":"https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L781"},{"type":"REPORT","url":"https://hackmd.io/@haindpwn/tcpflow-ip-payload-length-oob-read"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/tcpflow-through-1.6.1-out-of-bounds-read-via-tcp-demultiplexer-payload-length"}],"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_version":"1.4.4+repack1-2ubuntu0.1~esm1","binary_name":"tcpflow"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119600.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_version":"1.4.5+repack1-1ubuntu0.1","binary_name":"tcpflow-nox"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119600.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_name":"tcpflow","binary_version":"1.4.5+repack1-4ubuntu0.18.04.1"},{"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-2026-119600.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_version":"1.5.2+repack1-1build2","binary_name":"tcpflow"},{"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-2026-119600.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_version":"1.6.1-2build1","binary_name":"tcpflow-nox"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119600.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_name":"tcpflow","binary_version":"1.6.1-3build2"},{"binary_version":"1.6.1-3build2","binary_name":"tcpflow-nox"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119600.json"}},{"package":{"name":"tcpflow","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/tcpflow?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.1-3build3","1.6.1-3build4"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpflow","binary_version":"1.6.1-3build4"},{"binary_version":"1.6.1-3build4","binary_name":"tcpflow-nox"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119600.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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