Bug 1884107 (CVE-2020-26682) - CVE-2020-26682 libass: in`ass_outline_construct`'s call to `outline_stroke` a signed integer overflow could result in undefined behaviour
Summary: CVE-2020-26682 libass: in`ass_outline_construct`'s call to `outline_stroke` a...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-26682
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: 1884109 1884108
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-10-01 04:57 UTC by Michael Kaplan
Modified: 2021-02-16 19:10 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2020-10-01 08:21:10 UTC

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Description Michael Kaplan 2020-10-01 04:57:38 UTC 
In `ass_outline_construct`'s call to `outline_stroke` a signed integer
overflow happens leading to undefined behaviour.
Comment 1 Michael Kaplan 2020-10-01 04:57:41 UTC 
External References:

https://github.com/libass/libass/issues/431
https://github.com/libass/libass/pull/432
Comment 2 Michael Kaplan 2020-10-01 04:57:57 UTC 
Created libass tracking bugs for this issue:

Affects: epel-all [bug 1884109]
Affects: fedora-all [bug 1884108]
Comment 3 Product Security DevOps Team 2020-10-01 08:21:10 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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