Bug 1891110 (CVE-2020-27673) - CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
Summary: CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-27673
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1891112
Blocks: 1891113
TreeView+ depends on / blocked
 
Reported: 2020-10-23 19:32 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-10-28 14:21 UTC (History)
46 users (show)

Fixed In Version:
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Last Closed: 2020-10-28 14:21:15 UTC
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Description Guilherme de Almeida Suckevicz 2020-10-23 19:32:51 UTC 
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0.

Reference:
https://xenbits.xen.org/xsa/advisory-332.html

Upstream patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070
Comment 1 Guilherme de Almeida Suckevicz 2020-10-23 19:33:46 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1891112]
Comment 3 Product Security DevOps Team 2020-10-28 14:21:15 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-27673
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