Fix CVE-2024-8612 in qemu package on 3.0-dev branch #13855
Draft
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds a patch for CVE-2024-8612 to the qemu package.
Issue Description
CVE-2024-8612 addresses a vulnerability in QEMU's bounce buffer implementation. When DMA memory cannot be directly accessed, QEMU previously provided only a single bounce buffer per AddressSpace and would fail DMA map requests while the buffer was already in use, causing DMA failures that resulted in hardware errors from the guest perspective.
Changes Made
Fix Summary
The patch:
This change ensures that multiple DMA mappings can work correctly when RAM can't be mmap()-ed, preventing guest-visible hardware errors.
References
Warning
Firewall rules blocked me from connecting to one or more addresses
I tried to connect to the following addresses, but was blocked by firewall rules:
gitlab.com
curl -s REDACTED -o /tmp/patches/CVE-2024-8612.patch
(dns block)wget -q REDACTED -O /tmp/patches/CVE-2024-8612.patch
(dns block)If you need me to access, download, or install something from one of these locations, you can either:
💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.