{"id":"UBUNTU-CVE-2026-32249","details":"Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state-\u003eout1-\u003eout without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.","modified":"2026-04-16T10:59:44.236356Z","published":"2026-03-12T20:16:00Z","related":["USN-8171-1"],"upstream":["CVE-2026-32249"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-32249"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-32249"},{"type":"REPORT","url":"https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8171-1"}],"affected":[{"package":{"name":"vim","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/vim@2:9.1.0016-1ubuntu7.11?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:9.1.0016-1ubuntu7.11"}]}],"versions":["2:9.0.1672-1ubuntu2","2:9.0.2087-1ubuntu1","2:9.0.2116-1ubuntu1","2:9.0.2116-1ubuntu2","2:9.0.2184-0ubuntu1","2:9.0.2189-1ubuntu1","2:9.1.0-1ubuntu1","2:9.1.0016-1ubuntu2","2:9.1.0016-1ubuntu6","2:9.1.0016-1ubuntu7","2:9.1.0016-1ubuntu7.1","2:9.1.0016-1ubuntu7.2","2:9.1.0016-1ubuntu7.3","2:9.1.0016-1ubuntu7.4","2:9.1.0016-1ubuntu7.5","2:9.1.0016-1ubuntu7.6","2:9.1.0016-1ubuntu7.7","2:9.1.0016-1ubuntu7.8","2:9.1.0016-1ubuntu7.9","2:9.1.0016-1ubuntu7.10"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"vim","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-athena","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-common","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-gtk3","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-gui-common","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-motif","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"vim-nox","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_version":"2:9.1.0016-1ubuntu7.11","binary_name":"vim-runtime"},{"binary_name":"vim-tiny","binary_version":"2:9.1.0016-1ubuntu7.11"},{"binary_name":"xxd","binary_version":"2:9.1.0016-1ubuntu7.11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32249.json"}},{"package":{"name":"vim","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/vim@2:9.1.0967-1ubuntu6.2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:9.1.0967-1ubuntu6.2"}]}],"versions":["2:9.1.0967-1ubuntu4","2:9.1.0967-1ubuntu5","2:9.1.0967-1ubuntu6","2:9.1.0967-1ubuntu6.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"vim","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-athena","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-common","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-gtk3","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-gui-common","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-motif","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_version":"2:9.1.0967-1ubuntu6.2","binary_name":"vim-nox"},{"binary_name":"vim-runtime","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"vim-tiny","binary_version":"2:9.1.0967-1ubuntu6.2"},{"binary_name":"xxd","binary_version":"2:9.1.0967-1ubuntu6.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32249.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}