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Bug 1287752 - find_elf_note invalid read if setenv has been called before libproc init
Summary: find_elf_note invalid read if setenv has been called before libproc init
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: procps-ng
Version: 7.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Jan Rybar
QA Contact: Jan Houska
URL:
Whiteboard:
Depends On:
Blocks: 1163404 1305230
TreeView+ depends on / blocked
 
Reported: 2015-12-02 15:29 UTC by Branislav Náter
Modified: 2019-07-11 09:54 UTC (History)
7 users (show)

Fixed In Version: procps-ng-3.3.10-8.el7
Doc Type: Bug Fix
Doc Text:
Previously, behavior of the libproc library was unreliable when it was loaded with the dlopen() call after the environment was changed with the setenv() call. As a consequence, an invalid memory access error could occur in libproc. With this update, the find_elf_note() function obtains the auxiliary vector values using a different and safer method based on parsing the /proc/self/auxv file, and the described problem no longer occurs.
Clone Of: 1163404
Environment:
Last Closed: 2016-11-04 06:36:59 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
procps-ng-3.3.10-find_elf_note-memory-error-fix.patch (1.99 KB, patch)
2016-01-14 12:57 UTC, Jaromír Cápík 		no flags Details | Diff
Modified patch resolving obtaining of env. variables. (2.08 KB, patch)
2016-07-07 12:10 UTC, Jan Rybar 		no flags Details | Diff
Show Obsolete (1) View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:2447 0 normal SHIPPED_LIVE procps-ng bug fix update 2016-11-03 14:03:27 UTC

Comment 2 Jaromír Cápík 2016-01-14 12:57:12 UTC 
Created attachment 1114795 [details]
procps-ng-3.3.10-find_elf_note-memory-error-fix.patch
Comment 3 Jaromír Cápík 2016-01-14 13:15:24 UTC 
Fixed in Fedora rawhide (f24).
Comment 6 Jan Rybar 2016-07-07 12:10:47 UTC 
Created attachment 1177260 [details]
Modified patch resolving obtaining of env. variables.
Comment 11 errata-xmlrpc 2016-11-04 06:36:59 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2447.html
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