Bug 1333366 (CVE-2016-4490)

Summary: CVE-2016-4490 gcc: Write access violation
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: erik-fedora, gdb-bugs, jakub, jan.kratochvil, ktietz, law, mpolacek, nickc, ohudlick, rjones, rob, sergiodj, swhiteho
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-09 11:38:40 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1333388, 1333389    
Bug Blocks: 1333338    

Description Andrej Nemec 2016-05-05 11:45:40 UTC 
A vulnerability was found in gcc. Due to the inconsistent use of long and int for string/array length in cp-demangle.c there is an integer overflow that leads to a write access violation. The target crashes on an access violation at an address matching the destination operand of the instruction.

External references:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70498

Upstream patch:

https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=235767
Comment 1 Andrej Nemec 2016-05-05 12:11:25 UTC 
Created msp430-gcc tracking bugs for this issue:

Affects: fedora-all [bug 1333388]
Comment 2 Andrej Nemec 2016-05-05 12:11:31 UTC 
Created mingw-gcc tracking bugs for this issue:

Affects: epel-all [bug 1333389]
Comment 3 Raphael Sanchez Prudencio 2017-08-09 11:38:54 UTC 
Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.