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Vulnerability of libexif: integer overflow via exif_data_load_data_content

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via exif_data_load_data_content() of libexif, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Debian, Fedora, Android OS, RHEL, Ubuntu.
Severity of this announce: 2/4.
Creation date: 15/06/2020.
Références of this computer vulnerability: CVE-2020-0198, DLA-2249-1, FEDORA-2020-0aa0fc1b0c, FEDORA-2020-e99ef3282f, RHSA-2020:4766-01, USN-4396-1, VIGILANCE-VUL-32533.

Description of the vulnerability 

An attacker can trigger an integer overflow via exif_data_load_data_content() of libexif, in order to trigger a denial of service, and possibly to run code.
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This vulnerability note impacts software or systems such as Debian, Fedora, Android OS, RHEL, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Debian 8: new libexif packages.
New packages are available:
  Debian 8: libexif 0.6.21-2+deb8u4

Fedora 32: new libexif packages.
New packages are available:
  Fedora 32: libexif 0.6.22-2.fc32

Fedora 33: new libexif packages.
New packages are available:
  Fedora 33: libexif 0.6.22-3.fc33

Google Android/Pixel: patch for June 2020.
A patch is indicated in information sources.

RHEL 8: new libexif packages.
New packages are available:
  RHEL 8.0-8.2: libexif 0.6.22-4.el8

Ubuntu: new libexif packages.
New packages are available:
  Ubuntu 20.04 LTS: libexif12 0.6.21-6ubuntu0.3
  Ubuntu 19.10: libexif12 0.6.21-5.1ubuntu0.5
  Ubuntu 18.04 LTS: libexif12 0.6.21-4ubuntu0.5
  Ubuntu 16.04 LTS: libexif12 0.6.21-2ubuntu0.5
  Ubuntu 14.04 ESM: libexif12 0.6.21-1ubuntu1+esm5
  Ubuntu 12.04 ESM: libexif12 0.6.20-2ubuntu0.6
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