REDHAT-BUG-1765578: Null Pointer Dereference
First published: Fri Oct 25 2019(Updated: )
A NULL pointer dereference in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via malformed commands. Upstream Issue: <a href="https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=d2cdbcf6a8f2317f250fd54f08aa35dde2fa3e30#3cd772559e0d73afa136d6818023cfd0c4c8ecc0_0_589">https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=d2cdbcf6a8f2317f250fd54f08aa35dde2fa3e30#3cd772559e0d73afa136d6818023cfd0c4c8ecc0_0_589</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=d2cdbcf6a8f2317f250fd54f08aa35dde2fa3e30#3cd772559e0d73afa136d6818023cfd0c4c8ecc0_0_589
- https://gitlab.freedesktop.org/virgl/virglrenderer/commit/0d9a2c88dc3a70023541b3260b9f00c982abda16
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1784694
- https://bugzilla.redhat.com/show_bug.cgi?id=1765578
Frequently Asked Questions
What is the severity of REDHAT-BUG-1765578?
The vulnerability has the potential to cause a denial of service due to a NULL pointer dereference.
How do I fix REDHAT-BUG-1765578?
To mitigate REDHAT-BUG-1765578, upgrade to virglrenderer version 0.8.0 or later.
Who is affected by REDHAT-BUG-1765578?
Guest OS users utilizing versions of virglrenderer prior to 0.8.0 are affected.
What causes REDHAT-BUG-1765578?
This vulnerability is caused by malformed commands leading to a NULL pointer dereference in vrend_renderer.c.
Is there a workaround for REDHAT-BUG-1765578?
Disabling the use of virglrenderer until an upgrade can be performed is a potential temporary workaround.
- agent/references
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2019-18388
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/description
- agent/first-publish-date
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- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/freedesktop
- canonical/libvirglrenderer