CVE-2026-107676

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>ffmpeg</name>
	<range><lt>FIXME</lt></range>
      </package>
      <package>
	<name>ffmpeg-nox11</name>
	<range><lt>FIXME</lt></range>
      </package>
      <package>
	<name>ffmpeg3</name>
	<range><lt>FIXME</lt></range>
      </package>
      <package>
	<name>ffmpeg4</name>
	<range><lt>FIXME</lt></range>
      </package>
      <package>
	<name>linux-rl9-ffmpeg-libs</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>FFmpeg through 9.0.2 contains an uninitialized memory disclosure
	vulnerability in av_dynamic_hdr_plus_to_t35() that leaves up to three
	payload bytes uninitialized when tone_mapping_flag is 0. Attackers can
	supply crafted Matroska T.35 BlockAdditional or HEVC/AV1 SEI metadata
	so that remuxing or transcoding writes leaked process memory into
	output files.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-107676</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-107676</url>
    </references>
    <dates>
      <discovery>2026-10-08</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>