CVE-2026-120458

EUVD-2026-115218
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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/ultravideo/kvazaar/blob/v2.3.2/src/encmain.c#L339-L357
https://github.com/ultravideo/kvazaar/commit/8a2f109be283e87008c679d635966cc034da39c6
https://github.com/ultravideo/kvazaar/issues/452
https://github.com/ultravideo/kvazaar/releases/tag/v2.3.2
https://hackmd.io/@haindpwn/kvazaar-y4m-header-missing-newline-infinite-loop
https://www.vulncheck.com/advisories/kvazaar-through-2.3.2-infinite-loop-dos-via-y4m-header-parser