CVE and update status of the FreeBSD ports tree4,526 unaddressed CVEs in 616 portsAll times are CET

CVE details

CVE-2026-96611

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.

Score
6.9 medium
Published
2026-09-23
Links
NVD · cve.org

Affected ports (5)

PortPackageVersionStatusMaintainer
multimedia/ffmpeg3ffmpeg33.0.2_1unaddressedkreinholz@gmail.com
multimedia/ffmpeg4ffmpeg44.4.8_2unaddressedmonwarez@mailoo.org
multimedia/linux-rl9-ffmpeglinux-rl9-ffmpeg-libs7.1.5unaddressedemulation@FreeBSD.org
multimedia/ffmpegffmpeg9.0.2_2,1fixed by updatemultimedia@FreeBSD.org
multimedia/ffmpegffmpeg-nox119.0.2_2,1fixed by updatemultimedia@FreeBSD.org

Template for a VuXML entry

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>ffmpeg3</name>
	<range><lt>9.0</lt></range>
      </package>
      <package>
	<name>ffmpeg4</name>
	<range><lt>9.0</lt></range>
      </package>
      <package>
	<name>linux-rl9-ffmpeg-libs</name>
	<range><lt>9.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c.
	In mov_read_ispe(), uint32_t width/height values from a crafted HEIF
	ispe box are stored into signed int fields without bounds checking,
	allowing values exceeding INT_MAX to become negative. In
	read_image_grid(), accumulating these values causes signed integer
	overflow (undefined behavior per C17 section 6.5), which on x86 wraps
	to a small positive value, bypassing downstream validity checks.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-96611</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-96611</url>
    </references>
    <dates>
      <discovery>2026-09-23</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>