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Vulnerability of RHEL: denial of service via truncate_inode_pages_range

Synthesis of the vulnerability 

An attacker can generate a fatal error via truncate_inode_pages_range() of RHEL, in order to trigger a denial of service.
Impacted software: BIG-IP Hardware, TMOS, RHEL.
Severity of this computer vulnerability: 1/4.
Creation date: 10/04/2018.
Références of this announce: 1520893, CERTFR-2021-AVI-139, CVE-2017-15121, K42142782, RHSA-2018:0676-01, RHSA-2018:1062-01, RHSA-2018:1854-01, VIGILANCE-VUL-25816.

Description of the vulnerability 

An attacker can generate a fatal error via truncate_inode_pages_range() of RHEL, in order to trigger a denial of service.
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This computer threat impacts software or systems such as BIG-IP Hardware, TMOS, RHEL.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is low.

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

An attacker with a expert ability can exploit this cybersecurity weakness.

Solutions for this threat 

F5 BIG-IP: solution for Kernel.
The solution is indicated in information sources.

RHEL 6: new kernel packages.
New packages are available:
  RHEL 6: kernel 2.6.32-754.el6

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-862.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7: kernel-rt 3.10.0-862.rt56.804.el7
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