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Red Hat: CVE-2018-1120: Important: kernel-alt security, bug fix, and enhancement update (Multiple Advisories)

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Red Hat: CVE-2018-1120: Important: kernel-alt security, bug fix, and enhancement update (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
06/20/2018
Created
03/19/2019
Added
10/31/2018
Modified
03/03/2021

Description

A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).

Solution(s)

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

References

  • 104229
  • CVE-2018-1120
  • RHSA-2018:2948
  • RHSA-2018:3083
  • RHSA-2018:3096

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