UBUNTU-CVE-2026-120458

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    UBUNTU-CVE-2026-120458

    Published: 2 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-120458

    Summary:

    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.

    References: https://ubuntu.com/security/CVE-2026-120458, https://www.cve.org/CVERecord?id=CVE-2026-120458, 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

    Affected packages

    Package

    Name: kvazaar

    Purl: pkg:deb/ubuntu/kvazaar?arch=source&distro=stonking

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.3.2-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-120458 | CVE-DB