Bug 1905623 (CVE-2020-29485) - CVE-2020-29485 xen: oxenstored memory leak in reset_watches (XSA-330)
Summary: CVE-2020-29485 xen: oxenstored memory leak in reset_watches (XSA-330)
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-29485
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: 1908000
Blocks: 1903644
TreeView+ depends on / blocked
 
Reported: 2020-12-08 17:06 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-16 18:46 UTC (History)
4 users (show)

Fixed In Version:
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Last Closed: 2020-12-15 22:19:36 UTC


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Description Guilherme de Almeida Suckevicz 2020-12-08 17:06:45 UTC
When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored leading to a system-wide DoS.

Comment 1 Guilherme de Almeida Suckevicz 2020-12-15 16:27:10 UTC
External References:

https://www.openwall.com/lists/oss-security/2020/12/15/7

Comment 2 Guilherme de Almeida Suckevicz 2020-12-15 16:27:22 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1908000]

Comment 3 Product Security DevOps Team 2020-12-15 22:19:36 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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