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Oracle Linux: (CVE-2021-4002) (Multiple Advisories): kernel security, bug fix, and enhancement update

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Oracle Linux: (CVE-2021-4002) (Multiple Advisories): kernel security, bug fix, and enhancement update

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:N)
Published
01/06/2022
Created
04/28/2022
Added
04/26/2022
Modified
05/18/2022

Description

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

Solution(s)

  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-uek
  • oracle-linux-upgrade-kernel-uek-container
  • 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-firmware
  • oracle-linux-upgrade-kernel-uek-headers
  • oracle-linux-upgrade-kernel-uek-tools
  • oracle-linux-upgrade-kernel-uek-tools-libs
  • oracle-linux-upgrade-kernel-uek-tools-libs-devel
  • oracle-linux-upgrade-perf
  • oracle-linux-upgrade-python-perf

References

  • ELSA-2022-1988
  • CVE-2021-4002
  • USN-5206-1
  • USN-5207-1
  • USN-5208-1
  • USN-5209-1
  • USN-5210-1
  • USN-5210-2
  • USN-5211-1
  • USN-5218-1
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