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Amazon Linux AMI: CVE-2021-28038: Security patch for kernel (ALAS-2021-1487)

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Amazon Linux AMI: CVE-2021-28038: Security patch for kernel (ALAS-2021-1487)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
03/05/2021
Created
03/23/2021
Added
03/20/2021
Modified
10/14/2022

Description

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2021-1487
  • CVE-2021-28038
  • USN-4904-1
  • USN-4911-1
  • USN-4945-1
  • USN-4945-2
  • USN-4946-1
  • USN-4984-1
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