Bug 1383297 – CVE-2016-6323 glibc: Missing unwind info in __startcontext causes infinite loop in _Unwind_Backtrace

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Bug 1383297 - (CVE-2016-6323) CVE-2016-6323 glibc: Missing unwind info in __startcontext causes infinite loop in _Unwind_Backtrace

Summary:	CVE-2016-6323 glibc: Missing unwind info in __startcontext causes infinite lo...

Status:	CLOSED NOTABUG

Aliases:	CVE-2016-6323

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=low,public=20160804,reported=2...
Keywords:	Security

Depends On:	1383298 1383311
Blocks:	1383299
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Reported:	2016-10-10 07:36 EDT by Adam Mariš
Modified:	2016-10-21 10:06 EDT (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	glibc 2.25
Doc Type:	If docs needed, set a value
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Last Closed:	2016-10-10 07:57:17 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2016-10-10 07:36:07 EDT

Missing unwind info in __startcontext was found that can lead to infinite loop in _Unwind_Backtrace. Generating stack trace in application code compiled with gccgo can trigger this, causing the affected process hanging up instead of error message.

Upstream bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=20435

Comment 1 Adam Mariš 2016-10-10 07:36:40 EDT

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1383298]

Comment 2 Adam Mariš 2016-10-10 07:57:17 EDT

Affects only ARM EABI (32-bit) platforms.

Comment 3 Adam Mariš 2016-10-10 07:59:47 EDT

Created glibc-arm-linux-gnu tracking bugs for this issue:

Affects: fedora-all [bug 1383311]

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