Ubuntu 24.10, 22.04 LTS USN-7269-1: critical DoS in Intel Microcode

Several security issues were fixed in Intel Microcode.

Software Description:

- intel-microcode: Processor microcode for Intel CPUs

Details:

Ke Sun, Paul Grosen and Alyssa Milburn discovered that some Intel®

Processors did not properly implement Finite State Machines (FSMs) in

Hardware Logic. A local privileged attacker could use this issue to cause a

denial of service. (CVE-2024-31068)

It was discovered that some Intel® Processors with Intel® SGX did not

properly restrict access to the EDECCSSA user leaf function. A local

authenticated attacker could use this issue to cause a denial of

service. (CVE-2024-36293)

Ke Sun, Alyssa Milburn, Benoit Morgan, and Erik Bjorge discovered that the

UEFI firmware for some Intel® processors did not properly restrict

access. An authenticated local attacker could use this issue to cause a

denial of service. (CVE-2024-39279)