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Bug 1354383 - (CVE-2016-6187) CVE-2016-6187 kernel: apparmor: Potential privilege escalation via oops in apparmor_setprocattr()
CVE-2016-6187 kernel: apparmor: Potential privilege escalation via oops in ap...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20160708,repo...
: Security
Depends On: 1354385
Blocks: 1354388
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Reported: 2016-07-11 04:27 EDT by Andrej Nemec
Modified: 2016-10-05 03:55 EDT (History)
35 users (show)

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Doc Text:
A vulnerability leading to a local privilege escalation was found in apparmor in the Linux kernel. When proc_pid_attr_write() was changed to use memdup_user apparmor's (interface violating) assumption that the setprocattr buffer was always a single page was violated.
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Last Closed: 2016-07-20 00:31:25 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2016-07-11 04:27:48 EDT 
A vulnerability leading to a local privilege escalation was found in apparmor in the Linux kernel. When proc_pid_attr_write() was changed to use memdup_user apparmor's (interface violating) assumption that the setprocattr buffer was always a single page was violated.

Upstream pull request:

http://marc.info/?l=linux-kernel&m=146793642811929&w=2

Upstream fix:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30a46a4647fd1df9cf52e43bf467f0d9265096ca

References:

http://seclists.org/oss-sec/2016/q3/30
Comment 1 Andrej Nemec 2016-07-11 04:29:13 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1354385]
Comment 2 Wade Mealing 2016-07-20 00:31:25 EDT 
Statement:

Red Hat Enterprise Linux is not affected by this flaw as CONFIG_SECURITY_APPARMOR is not enabled in any current shipping kernels.
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