Bug 1362534 – CVE-2016-5417 glibc: per-thread memory leak in __res_vinit with IPv6 nameservers

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 1362534 - (CVE-2016-5417) CVE-2016-5417 glibc: per-thread memory leak in __res_vinit with IPv6 nameservers

Summary:	CVE-2016-5417 glibc: per-thread memory leak in __res_vinit with IPv6 nameservers

Status:	CLOSED NOTABUG

Aliases:	CVE-2016-5417

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
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20160802,reported=2...
Keywords:	Security

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2016-08-02 08:56 EDT by Martin Prpič
Modified:	2016-08-02 08:57 EDT (History)
CC List:	11 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-08-02 08:57:03 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Martin Prpič 2016-08-02 08:56:19 EDT

A minor issue that does not affect the versions of glibc in RHEL or Fedora was reported:

The issue was introduced in glibc 2.22, with commit 2212c1420c92a33b0e0bd9a34938c9814a56c0f7 (which also caused other regressions, which is why we backed it out in Fedora).

The leak is triggered if name resolution functions are called in such a way that internal resolver data structures are only initialized partially. The memory leak was independently reported as occurring during Apache httpd testing, so we found it prudent to treat it as a very minor security vulnerability.

Reference:

http://seclists.org/oss-sec/2016/q3/225

Upstream bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1305132

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