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:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-12-15 22:19:36 UTC
Embargoed:

Attachments (Terms of Use)

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.
Note You need to log in before you can comment on or make changes to this bug.