{"id":"UBUNTU-CVE-2026-120458","details":"Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.","modified":"2026-11-04T03:30:38.332386929Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120458"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120458"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120458"},{"type":"REPORT","url":"https://github.com/ultravideo/kvazaar/blob/v2.3.2/src/encmain.c#L339-L357"},{"type":"REPORT","url":"https://github.com/ultravideo/kvazaar/commit/8a2f109be283e87008c679d635966cc034da39c6"},{"type":"REPORT","url":"https://github.com/ultravideo/kvazaar/issues/452"},{"type":"REPORT","url":"https://github.com/ultravideo/kvazaar/releases/tag/v2.3.2"},{"type":"REPORT","url":"https://hackmd.io/@haindpwn/kvazaar-y4m-header-missing-newline-infinite-loop"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/kvazaar-through-2.3.2-infinite-loop-dos-via-y4m-header-parser"}],"affected":[{"package":{"name":"kvazaar","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/kvazaar?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"kvazaar","binary_version":"2.3.2-1"},{"binary_version":"2.3.2-1","binary_name":"libkvazaar7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120458.json"}},{"package":{"name":"kvazaar","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/kvazaar?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-3","2.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"kvazaar","binary_version":"2.3.2-1"},{"binary_version":"2.3.2-1","binary_name":"libkvazaar7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120458.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}