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Oracle Linux: (CVE-2021-20321) (Multiple Advisories): Unbreakable Enterprise kernel security update

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Oracle Linux: (CVE-2021-20321) (Multiple Advisories): Unbreakable Enterprise kernel security update

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
12/22/2021
Created
12/28/2021
Added
12/22/2021
Modified
11/23/2022

Description

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.

Solution(s)

  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-uek
  • 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

References

  • ELSA-2022-9088
  • CVE-2021-20321
  • USN-5208-1
  • USN-5209-1
  • USN-5210-1
  • USN-5210-2
  • USN-5218-1
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