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Red Hat: CVE-2017-15126: Important: kernel-rt security, bug fix, and enhancement update (Multiple Advisories)

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Red Hat: CVE-2017-15126: Important: kernel-rt security, bug fix, and enhancement update (Multiple Advisories)

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
01/14/2018
Created
07/25/2018
Added
04/11/2018
Modified
02/14/2023

Description

A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().

Solution(s)

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

References

  • 102516
  • CVE-2017-15126
  • RHSA-2018:0676
  • RHSA-2018:1062

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