Bug 1352459 (CVE-2016-6264) - CVE-2016-6264 uClibc: Integer overflow vulnerability leads to code execution on ARM architecture
Summary: CVE-2016-6264 uClibc: Integer overflow vulnerability leads to code execution ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-6264
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: 1352460
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-07-04 08:24 UTC by Adam Mariš
Modified: 2019-09-29 13:52 UTC (History)
4 users (show)

Fixed In Version:
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Last Closed: 2016-07-04 08:29:52 UTC
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Description Adam Mariš 2016-07-04 08:24:45 UTC 
It was found that 'BLT' instruction in libc/string/arm/memset.S checks for signed values. If parameter of memset is negative, then value added to the PC will be large. Attacker that controls the length parameter of memset can also control the value of PC register.

Proposed patch:

http://repo.or.cz/uclibc-ng.git/commit/e3848e3dd64a8d6437531488fe341354bc02eaed

CVE request:

http://seclists.org/oss-sec/2016/q2/621
Comment 1 Adam Mariš 2016-07-04 08:26:38 UTC 
Created uClibc tracking bugs for this issue:

Affects: fedora-all [bug 1352460]
Comment 2 Andrej Nemec 2016-07-21 14:19:05 UTC 
CVE assignment:

http://seclists.org/oss-sec/2016/q3/126
Comment 3 Fedora Update System 2016-08-27 10:31:09 UTC 
uClibc-0.9.33.2-11.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2016-08-27 15:19:16 UTC 
uClibc-0.9.33.2-10.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
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