CVE-2024-21853
Publication date 13 November 2024
Last updated 3 July 2025
Ubuntu priority
Description
Improper finite state machines (FSMs) in the hardware logic in some 4th and 5th Generation Intel(R) Xeon(R) Processors may allow an authorized user to potentially enable denial of service via local access.
From the Ubuntu Security Team
It was discovered that some 4th and 5th Generation Intel(R) Xeon(R) Processors did not properly implement finite state machines (FSMs) in hardware logic. THis may allow a local privileged attacker to cause a denial of service (system crash).
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| intel-microcode | ||
| 24.04 LTS noble |
Fixed 3.20241112.0ubuntu0.24.04.1
|
|
| 22.04 LTS jammy |
Fixed 3.20241112.0ubuntu0.22.04.1
|
|
| 20.04 LTS focal |
Fixed 3.20241112.0ubuntu0.20.04.1
|
|
| 18.04 LTS bionic |
Fixed 3.20241112.0ubuntu0.18.04.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 3.20241112.0ubuntu0.16.04.1+esm1
|
|
| 14.04 LTS trusty | Ignored end of ESM support, was ignored [trusty doesn't support late loading of microcode] |
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CVSS version: CVSS v3.0
Base score
4.7 · Medium
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-7149-1
- Intel Microcode vulnerabilities
- 11 December 2024