CVE-2023-38575
Publication date 12 March 2024
Last updated 24 July 2024
Ubuntu priority
Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
From the Ubuntu Security Team
It was discovered that some Intel® Processors did not properly clear the state of various hardware structures when switching execution contexts. A local attacker could use this to access privileged information.
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 end of ESM support, was ignored [trusty doesn't support early microcode loading at runtime] |
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Get Ubuntu ProSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.5 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6797-1
- Intel Microcode vulnerabilities
- 29 May 2024