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Red Hat: CVE-2018-16871: NULL pointer dereference due to an anomalized NFS message sequence (Multiple Advisories)

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Red Hat: CVE-2018-16871: NULL pointer dereference due to an anomalized NFS message sequence (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
07/29/2019
Created
07/30/2019
Added
07/30/2019
Modified
03/13/2024

Description

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2018-16871
  • RHSA-2019:1873
  • RHSA-2019:1891
  • RHSA-2019:2696
  • RHSA-2019:2730
  • RHSA-2020:0740
  • RHSA-2020:1567
  • RHSA-2020:1769
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