REDHAT-BUG-1765577: Buffer Overflow
First published: Fri Oct 25 2019(Updated: )
A heap-based buffer overflow in the vrend_renderer_transfer_write_iov function in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service, or QEMU guest-to-host escape and code execution, via VIRGL_CCMD_RESOURCE_INLINE_WRITE commands. Upstream Issue: <a href="https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d">https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libvirglrenderer | <=0.8.0 |
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Reference Links
- https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d
- https://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1784502
- https://bugzilla.redhat.com/show_bug.cgi?id=1765577
Frequently Asked Questions
What is the severity of REDHAT-BUG-1765577?
The severity of REDHAT-BUG-1765577 is critical due to the potential for denial of service and guest-to-host escape leading to code execution.
How do I fix REDHAT-BUG-1765577?
To fix REDHAT-BUG-1765577, upgrade to virglrenderer version above 0.8.0.
Which software is affected by REDHAT-BUG-1765577?
Freedesktop virglrenderer versions up to and including 0.8.0 are affected by REDHAT-BUG-1765577.
What types of attacks can REDHAT-BUG-1765577 enable?
REDHAT-BUG-1765577 can enable denial of service attacks and potential code execution via guest-to-host escape.
Is there an upstream issue related to REDHAT-BUG-1765577?
Yes, the upstream issue for REDHAT-BUG-1765577 has been tracked in the Freedesktop project repositories.
- agent/references
- agent/last-modified-date
- agent/first-publish-date
- agent/type
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2019-18389
- agent/weakness
- agent/severity
- agent/description
- agent/event
- agent/trending
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- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/freedesktop
- canonical/libvirglrenderer