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Bug 1420236 - (CVE-2016-10044) CVE-2016-10044 kernel: aio_mount function does not properly restrict execute access
CVE-2016-10044 kernel: aio_mount function does not properly restrict execute ...
Status: CLOSED WONTFIX
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=20160916,repor...
: Security
Depends On: 1431924 1431925 1431926 1431927 1431928
Blocks: 1420237
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Reported: 2017-02-08 04:35 EST by Andrej Nemec
Modified: 2017-05-22 00:41 EDT (History)
35 users (show)

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Doc Text:
The aio_mount function in fs/aio.c in the Linux kernel does not properly restrict execute access, which makes it easier for local users to bypass intended SELinux W^X policy restrictions.
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Last Closed: 2017-05-22 00:41:17 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2017-02-08 04:35:09 EST 
The aio_mount function in fs/aio.c in the Linux kernel does not properly restrict execute access, which makes it easier for local users to bypass intended SELinux W^X policy restrictions, and consequently gain privileges, via an io_setup system call.

Upstream patch:

https://github.com/torvalds/linux/commit/22f6b4d34fcf039c63a94e7670e0da24f8575a5a

References:

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.7
https://en.wikipedia.org/wiki/W%5EX
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