Bug 1733415 - qemu: Out of bounds write in the PBP bitmap via pointer to a RAMBlock
Summary: qemu: Out of bounds write in the PBP bitmap via pointer to a RAMBlock
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Depends On:
Blocks: 1733417
TreeView+ depends on / blocked
 
Reported: 2019-07-26 03:52 UTC by Pedro Sampaio
Modified: 2020-01-07 10:17 UTC (History)
31 users (show)

Fixed In Version:
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Last Closed: 2020-01-07 10:17:59 UTC


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Description Pedro Sampaio 2019-07-26 03:52:19 UTC
A flaw was found in qemu v4.0 and newer. An out of bounds write in the PBP bitmap can be trigged if a ramblock gets removed/readded and gets the exact same address causing qemu to crash. 

Upstream patch:

https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg05673.html
https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg05668.html


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