UBUNTU-CVE-2026-64831

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    UBUNTU-CVE-2026-64831

    Published: 22 Jul 2026Last Modified: 10 Sept 2026
    Upstream:
    CVE-2026-64831
    Aliases:
    USN-8716-2

    Summary:

    Details: FFmpeg versions 8.0 through 8.1.2 contains a stack buffer overflow vulnerability in the Vulkan HEVC hardware decoder that allows remote attackers to overwrite return addresses and adjacent stack frames by supplying a crafted HEVC/H.265 bitstream. Attackers can embed a malicious vps_num_hrd_parameters value exceeding HEVC_MAX_SUB_LAYERS in any supported container format to overflow stack-allocated arrays in the vk_hevc_end_frame function, potentially achieving arbitrary code execution.

    References: https://ubuntu.com/security/CVE-2026-64831, https://www.cve.org/CVERecord?id=CVE-2026-64831, https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23665, 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-2026-64831 | CVE-DB