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Oracle Linux: CVE-2021-38578: ELSA-2023-2165: edk2 security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2021-38578: ELSA-2023-2165: edk2 security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:M/C:C/I:C/A:P)
Published
03/03/2022
Created
05/19/2023
Added
05/18/2023
Modified
07/22/2024

Description

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize. A flaw was found in edk2. A integer underflow in the SmmEntryPoint function leads to a write into the SMM region allowing a local attacker with administration privileges on the system to execute code within the SMM privileged context. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Solution(s)

  • oracle-linux-upgrade-edk2-aarch64
  • oracle-linux-upgrade-edk2-ovmf
  • oracle-linux-upgrade-edk2-tools
  • oracle-linux-upgrade-edk2-tools-doc

References

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