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Oracle Linux: (CVE-2021-31829) (Multiple Advisories): Unbreakable Enterprise kernel-container security update

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Oracle Linux: (CVE-2021-31829) (Multiple Advisories): Unbreakable Enterprise kernel-container security update

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
05/06/2021
Created
07/20/2021
Added
07/16/2021
Modified
07/16/2021

Description

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

Solution(s)

  • oracle-linux-upgrade-kernel-uek
  • oracle-linux-upgrade-kernel-uek-container
  • oracle-linux-upgrade-kernel-uek-container-debug
  • oracle-linux-upgrade-kernel-uek-debug
  • oracle-linux-upgrade-kernel-uek-debug-devel
  • oracle-linux-upgrade-kernel-uek-devel
  • oracle-linux-upgrade-kernel-uek-doc
  • oracle-linux-upgrade-kernel-uek-tools
  • oracle-linux-upgrade-kernel-uek-tools-libs
  • oracle-linux-upgrade-perf
  • oracle-linux-upgrade-python-perf

References

  • ELSA-2021-9363
  • CVE-2021-31829
  • USN-4983-1
  • USN-4997-1
  • USN-4997-2
  • USN-4999-1
  • USN-5000-1
  • USN-5000-2
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