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.
History

Sat, 07 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 07 Nov 2026 01:30:00 +0000


Tue, 03 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Ultra Video Group
Ultra Video Group kvazaar
Vendors & Products Ultra Video Group
Ultra Video Group kvazaar

Mon, 02 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-02T14:29:15.073Z

Updated: 2026-11-07T00:19:55.916Z

Reserved: 2026-11-02T12:42:23.013Z

Link: CVE-2026-120458

cve-icon Vulnrichment

Updated: 2026-11-07T00:19:32.558Z

cve-icon NVD

Status : Deferred

Published: 2026-11-02T15:17:29.697

Modified: 2026-11-07T01:17:02.013

Link: CVE-2026-120458

cve-icon Redhat

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