[USN-8531-1] libexif vulnerabilities

[noreply+usn-bot at canonical.com]

==========================================================================
Ubuntu Security Notice USN-8531-1
July 13, 2026

libexif vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in libexif.

Software Description:
- libexif: library to parse EXIF files

Details:

It was discovered that libexif had an integer overflow in its MakerNote
decoder when called with a zero-length buffer. An attacker could possibly
use this issue to cause a denial of service or obtain sensitive
information. (CVE-2026-32775)

It was discovered that libexif had an integer overflow in its Nikon
MakerNote handler on 32-bit systems. A local attacker could possibly use
this issue to cause a denial of service or obtain sensitive information.
(CVE-2026-40385)

It was discovered that libexif had an integer underflow in its size
checking for Fuji and Olympus MakerNote decoding. An attacker could
possibly use this issue to cause a denial of service or obtain sensitive
information. (CVE-2026-40386)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  libexif12                       0.6.25-2ubuntu0.1

Ubuntu 24.04 LTS
  libexif12                       0.6.24-1ubuntu0.24.04.1

Ubuntu 22.04 LTS
  libexif12                       0.6.24-1ubuntu0.22.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-8531-1
  CVE-2026-32775, CVE-2026-40385, CVE-2026-40386

Package Information:
  https://launchpad.net/ubuntu/+source/libexif/0.6.25-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.24-1ubuntu0.24.04.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.24-1ubuntu0.22.04.1
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