CVE-2023-38575

What it actually does

Non-transparent sharing of return predictor targets between contexts in some Intel processors allows an authorized local user to disclose sensitive information.

Why it matters to the business

Low-probability exposure of confidential data on affected Intel-based systems; stable low exploit likelihood and absence from known campaigns limit operational urgency despite the package update availability on AlmaLinux.

How an attack unfolds

An attacker with local access runs code that trains and probes the return predictor across contexts to leak data; no named threat actors or ransomware usage reported.

How to fix it

Update python3-augeas on AlmaLinux 8 to version 0.5.0-12.el8 or later; apply any available Intel microcode updates for the processor family.

How to confirm the fix worked

Confirm python3-augeas package version is at least 0.5.0-12.el8 and verify presence of updated Intel microcode via system tools.

Typical attack path

1. Obtain local user access on a vulnerable Intel processor system
2. Execute code that manipulates return predictor state across security contexts
3. Observe timing or other side effects to reconstruct sensitive information

How to detect it

Review system logs and process execution records for unusual local code activity targeting processor predictors; no specific artifacts tied to known exploitation campaigns.

What your security team should do

• Apply the AlmaLinux package update immediately on all affected hosts
• Monitor EPSS and KEV status for any future increase in exploit activity
• Review local access controls to reduce the attack surface for information disclosure