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Vulnerability of libxml2: memory leak via xmlSchemaValidateStream

Synthesis of the vulnerability 

An attacker can create a memory leak via xmlSchemaValidateStream() of libxml2, in order to trigger a denial of service.
Impacted products: Fedora, libxml.
Severity of this bulletin: 1/4.
Creation date: 22/01/2020.
Références of this threat: CVE-2019-20388, FEDORA-2020-41fe1680f6, VIGILANCE-VUL-31395.

Description of the vulnerability 

An attacker can create a memory leak via xmlSchemaValidateStream() of libxml2, in order to trigger a denial of service.
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This vulnerability impacts software or systems such as Fedora, libxml.

Our Vigil@nce team determined that the severity of this security announce is low.

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 vulnerability note.

Solutions for this threat 

libxml2: patch for xmlSchemaValidateStream.
A patch is indicated in information sources.

Fedora 31: new libxml2 packages.
New packages are available:
  Fedora 31: libxml2 2.9.10-3.fc31

Wind River Linux: version 10.19.45.6.
The version 10.19.45.6 is fixed:
  https://support2.windriver.com/
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