CVE-2023-22655
Publication date 12 March 2024
Last updated 26 August 2025
Ubuntu priority
Description
Protection mechanism failure in some 3rd and 4th Generation Intel(R) Xeon(R) Processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.
From the Ubuntu Security Team
It was discovered that some 3rd and 4th Generation Intel® Xeon® Processors did not properly restrict access to certain hardware features when using Intel® SGX or Intel® TDX. This may allow a privileged local user to potentially further escalate their privileges on the system.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| intel-microcode | 24.04 LTS noble |
Not affected
|
| 22.04 LTS jammy |
Fixed 3.20240514.0ubuntu0.22.04.1
|
|
| 20.04 LTS focal |
Fixed 3.20240514.0ubuntu0.20.04.1
|
|
| 18.04 LTS bionic |
Fixed 3.20240514.0ubuntu0.18.04.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 3.20240514.0ubuntu0.16.04.1+esm1
|
|
| 14.04 LTS trusty | Ignored trusty doesn't support early microcode loading at runtime |
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| Parameter | Value |
|---|---|
| Base score |
6.1 · Medium
|
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6797-1
- Intel Microcode vulnerabilities
- 29 May 2024