Bug 1422438 (CVE-2017-5993) - CVE-2017-5993 Virglrenderer: host memory leakage when initialising blitter context
Summary: CVE-2017-5993 Virglrenderer: host memory leakage when initialising blitter co...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2017-5993
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1422439
Blocks: 1409505
TreeView+ depends on / blocked
 
Reported: 2017-02-15 10:52 UTC by Prasad Pandit
Modified: 2021-02-17 02:35 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2019-06-08 03:07:41 UTC
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Description Prasad Pandit 2017-02-15 10:52:31 UTC 
Virgil 3d project, used by Quick Emulator(Qemu) to implement 3D GPU support
for the virtio GPU, is vulnerable to memory leakage issue. It could occur when
a guest tries to initialise blitter context via 'VIRGL_CCMD_BLIT' command.

A guest user/process could use this flaw to leak host memory resulting in DoS.

Upstream patch:
---------------
  -> https://cgit.freedesktop.org/virglrenderer/commit/?id=6eb13f7a2dcf391ec9e19b4c2a79e68305f63c22

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/02/15/7
Comment 1 Prasad Pandit 2017-02-15 10:52:43 UTC 
Acknowledgments:

Name: Li Qiang (360.cn Inc.)
Comment 2 Prasad Pandit 2017-02-15 10:53:26 UTC 
Created virglrenderer tracking bugs for this issue:

Affects: fedora-all [bug 1422439]
Comment 3 Product Security DevOps Team 2019-06-08 03:07:41 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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