Bug 1929552 (CVE-2021-26932) - CVE-2021-26932 xen: Linux: grant mapping error handling issues
Summary: CVE-2021-26932 xen: Linux: grant mapping error handling issues
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-26932
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: 1929553
Blocks: 1924847
TreeView+ depends on / blocked
 
Reported: 2021-02-17 06:18 UTC by msiddiqu
Modified: 2021-02-17 07:02 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-02-17 07:02:29 UTC
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Description msiddiqu 2021-02-17 06:18:09 UTC 
Grant mapping operations often occur in batch hypercalls, where a
number of operations are done in a single hypercall, the success or
failure of each one reported to the backend driver, and the backend
driver then loops over the results, performing follow-up actions based
on the success or failure of each operation.

External References:

https://xenbits.xen.org/xsa/advisory-361.html
Comment 1 msiddiqu 2021-02-17 06:18:29 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1929553]
Comment 2 Product Security DevOps Team 2021-02-17 07:02:29 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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