UBUNTU-CVE-2026-64833

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    UBUNTU-CVE-2026-64833

    Published: 22 Jul 2026Last Modified: 10 Sept 2026
    Upstream:
    CVE-2026-64833

    Summary:

    Details: FFmpeg versions 0.7.1 through 8.1.2 contain an out-of-bounds read vulnerability in the S/PDIF muxer that allows attackers to access memory beyond buffer boundaries by supplying a crafted DTS stream with a core_size value larger than the actual packet length. Attackers can exploit the missing bounds check in the spdif_header_dts4 function by providing a malicious DTS-HD audio stream during S/PDIF re-muxing to trigger unauthorized memory reads beyond the packet buffer.

    References: https://ubuntu.com/security/CVE-2026-64833, https://www.cve.org/CVERecord?id=CVE-2026-64833, https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23661, https://ubuntu.com/security/notices/USN-8716-1, https://ubuntu.com/security/notices/USN-8716-2

    Affected packages

    Package

    Name: libav

    Purl: pkg:deb/ubuntu/libav?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    6:0.8.7-1ubuntu2

    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-2026-64833 | CVE-DB