Bug 1771444 (CVE-2019-17347) - CVE-2019-17347 xen: x86: PV kernel context switch corruption leading to Dos or privileges escalation
Summary: CVE-2019-17347 xen: x86: PV kernel context switch corruption leading to Dos o...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-17347
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1771445
Blocks: 1762982
TreeView+ depends on / blocked
 
Reported: 2019-11-12 11:46 UTC by Marian Rehak
Modified: 2020-05-05 19:05 UTC (History)
23 users (show)

Fixed In Version:
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Last Closed: 2020-02-24 15:08:07 UTC
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Description Marian Rehak 2019-11-12 11:46:02 UTC
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux (and possibly other guest kernels).

Upstream issue and patch:

https://xenbits.xen.org/xsa/advisory-293.html

Comment 1 Marian Rehak 2019-11-12 11:46:23 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1771445]


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