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Amazon Linux AMI: CVE-2020-27675: Security patch for kernel ((Multiple Advisories))

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Amazon Linux AMI: CVE-2020-27675: Security patch for kernel ((Multiple Advisories))

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
10/22/2020
Created
12/22/2020
Added
12/19/2020
Modified
01/15/2021

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)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2021-1461
  • CVE-2020-27675
  • USN-4679-1
  • USN-4680-1
  • USN-4681-1

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