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Bug 1027778 - (CVE-2013-2930) CVE-2013-2930 kernel: perf/ftrace: insufficient check in perf_trace_event_perm()
CVE-2013-2930 kernel: perf/ftrace: insufficient check in perf_trace_event_perm()
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20131209,repor...
: Security
Depends On: 1027779 1027781 1027783
Blocks: 1027789
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Reported: 2013-11-07 07:06 EST by Petr Matousek
Modified: 2015-10-15 14:04 EDT (History)
20 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2014-01-28 13:29:30 EST
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0100 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2014-01-28 17:38:58 EST

  None (edit)
Description Petr Matousek 2013-11-07 07:06:17 EST 
A flaw was found in the way perf_trace_event_perm() function in the Linux kernel checked permissions for function tracer functionality, allowing unprivileged local user to enable function tracing.

As a result, unprivileged local user could make the system unusable (DoS).

Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ced39002f5ea

Fixed by:
http://git.kernel.org/cgit/linux/kernel/git/rostedt/linux-trace.git/commit/?h=ftrace/urgent&id=d1356abac98cce8e7765186f8093da1442d74d1d
Comment 4 Petr Matousek 2013-11-07 07:51:08 EST 
Statement:

This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5 and 6.
Comment 5 Jarod Wilson 2013-12-05 09:09:18 EST 
Patch(es) available on kernel-3.10.0-58.el7
Comment 7 Jarod Wilson 2013-12-05 15:13:48 EST 
This is the tracking bug, not the RHEL7 bug, not quite sure how that didn't get caught at commit time. Fixing...
Comment 12 errata-xmlrpc 2014-01-28 12:40:46 EST 
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0100 https://rhn.redhat.com/errata/RHSA-2014-0100.html
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