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    CVE-2026-125270

    FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in v4l2_buffer_swframe_to_buf() in libavcodec/v4l2_buffers.c that mishandles frames with negative linesize. Attackers can supply bottom-up AVI or PNM/PFM files that are transcoded to a V4L2 M2M encoder, crashing the application or leaking heap memory into encoded output.

    Published:Nov 9, 2026
    Last Modified:Nov 9, 2026
    EPS:Nov 9, 2026
    EPSS Score:
    CVSS Score:5.3

    Affected Products

    Vendor
    Ffmpeg
    Product
    Ffmpeg

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-125269 (CVSS 7.3) — FFmpeg through 9.0.2 contains a double free vulnerability in libavcodec/cbs_sei.c where cbs_sei_delete_message…
    CVE-2026-125268 (CVSS 4.8) — FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the CineForm HD decoder that…
    CVE-2026-125267 (CVSS 8.5) — FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a heap out-of-bounds write vulnerability in the APAC decoder…
    CVE-2026-125266 (CVSS 4.8) — FFmpeg through 9.0.2 contains an uninitialized stack memory disclosure vulnerability in old_codec23() of libav…
    CVE-2026-125265 (CVSS 5.8) — FFmpeg through 9.0.2 contains a use-after-free vulnerability in libavcodec/nvdec.c because ff_nvdec_start_fram…
    CVE-2026-125264 (CVSS 6.8) — FFmpeg through 9.0.2 contains an uncontrolled resource consumption vulnerability in parse_frame_header() in li…
    CVE-2026-125263 (CVSS 5.7) — FFmpeg 9.0 through 9.0.2 built with liblcevc_dec fails to validate LCEVC enhanced output dimensions against ma…
    CVE-2026-125262 (CVSS 8.5) — FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/lcevcdec.c because LCEVC outp…
    CVE-2026-125261 (CVSS 6.9) — FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the SGI encoder's encode_frame() in libav…
    CVE-2026-125260 (CVSS 7.3) — FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/exrenc.c that allows attacker…

    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