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SUSE: CVE-2020-27675: SUSE Linux Security Advisory

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SUSE: CVE-2020-27675: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
10/22/2020
Created
02/18/2021
Added
02/16/2021
Modified
02/04/2022

Description

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.

Solution(s)

  • suse-upgrade-cluster-md-kmp-default
  • suse-upgrade-dlm-kmp-default
  • suse-upgrade-gfs2-kmp-default
  • suse-upgrade-kernel-azure
  • suse-upgrade-kernel-azure-base
  • suse-upgrade-kernel-azure-devel
  • suse-upgrade-kernel-default
  • suse-upgrade-kernel-devel-azure
  • suse-upgrade-kernel-source-azure
  • suse-upgrade-kernel-syms-azure
  • suse-upgrade-ocfs2-kmp-default

References

  • SUSE-SU-2020:3272-1
  • SUSE-SU-2020:3281-1
  • SUSE-SU-2020:3491-1
  • SUSE-SU-2020:3532-1
  • SUSE-SU-2020:3544-1
  • CVE-2020-27675
  • USN-4679-1
  • USN-4680-1
  • USN-4681-1
  • USN-4751-1
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