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CVE details

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.

Score
5.8 medium
Published
2026-11-09
Links
NVD · cve.org · Report wrong data

Matched ports (5)

PortPackageVersionStatusMaintainer
multimedia/ffmpegffmpeg9.0.2_3,1unaddressedmultimedia@FreeBSD.org
multimedia/ffmpegffmpeg-nox119.0.2_3,1unaddressedmultimedia@FreeBSD.org
multimedia/ffmpeg3ffmpeg33.0.2_1unaddressedkreinholz@gmail.com
multimedia/ffmpeg4ffmpeg44.4.8_2unaddressedmonwarez@mailoo.org
multimedia/linux-rl9-ffmpeglinux-rl9-ffmpeg-libs7.1.5possibly backportedemulation@FreeBSD.org

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Check the version numbers before you commit this entry. Some ports share an entry in the CVE database with another port, such as sqlite2 and sqlite3. The version shown here may then be one that never existed for this port.

Ranges per package from the CVE rows that match this port, in pkg notation with the port's epoch and revision, every bound checked with pkg; one range per epoch the port actually had. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>ffmpeg -- FIXME</topic>
    <affects>
      <package>
	<name>ffmpeg</name>
	<name>ffmpeg-nox11</name>
	<range><le>9.0.2_3,1</le></range>
      </package>
      <package>
	<name>ffmpeg3</name>
	<name>ffmpeg4</name>
	<range><le>9.0.2</le></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-125270</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-125270</url>
    </references>
    <dates>
      <discovery>2026-11-09</discovery>
      <entry>2026-11-10</entry>
    </dates>
  </vuln>