Host-process memory disclosure via unchecked HDA index
Published Nov 12, 2024 · Updated Nov 3, 2025
Out-of-bounds read in FreeBSD bhyve allows guest OS users to disclose host-process memory through a crafted HDA command. The hda_codec_command function extracts a guest-controlled payload from the command and uses it as an array index without validation. Exposure requires an HDA device assigned to a malicious guest, and the consequence is limited to disclosure of memory within the bhyve process.
Summary
What happened
Out-of-bounds read in FreeBSD bhyve allows guest OS users to disclose host-process memory through a crafted HDA command. The hda_codec_command function extracts a guest-controlled payload from the command and uses it as an array index without validation. Exposure requires an HDA device assigned to a malicious guest, and the consequence is limited to disclosure of memory within the bhyve process.
The record
- CVE
- CVE-2024-51565
- Published
- Nov 12, 2024
- Updated
- Nov 3, 2025
- Vendor
- The FreeBSD Project
- Product
- FreeBSD
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Nov 12, 2024CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <*
- Affected versionversion=13.3-RELEASE <p8
- Affected versionversion=13.4-RELEASE <p2
- Affected versionversion=14.1-RELEASE <p6
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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