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Vulnerability of libiberty: NULL pointer dereference via work_stuff_copy_to_from

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via work_stuff_copy_to_from() of libiberty, in order to trigger a denial of service.
Impacted products: RHEL, Ubuntu.
Severity of this bulletin: 1/4.
Creation date: 06/08/2019.
Références of this threat: CVE-2018-12697, RHSA-2019:2075-01, USN-4326-1, USN-4336-1, VIGILANCE-VUL-29955.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via work_stuff_copy_to_from() of libiberty, in order to trigger a denial of service.
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This computer vulnerability alert impacts software or systems such as RHEL, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat alert 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 security vulnerability.

Solutions for this threat 

RHEL 7: new binutils packages.
New packages are available:
  RHEL 7: binutils 2.27-41.base.el7

Ubuntu 18.04 LTS: new binutils packages.
New packages are available:
  Ubuntu 18.04 LTS: binutils 2.30-21ubuntu1~18.04.3, binutils-multiarch 2.30-21ubuntu1~18.04.3

Ubuntu: new libiberty-dev packages.
New packages are available:
  Ubuntu 18.04 LTS: libiberty-dev 20170913-1ubuntu0.1
  Ubuntu 16.04 LTS: libiberty-dev 20160215-1ubuntu0.3
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