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Bug 1404284 - (CVE-2015-8967) CVE-2015-8967 kernel: arm64: Strict page permission bypass
CVE-2015-8967 kernel: arm64: Strict page permission bypass
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=20161208,repo...
: Security
Depends On:
Blocks: 1404286
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Reported: 2016-12-13 09:25 EST by Andrej Nemec
Modified: 2016-12-21 14:03 EST (History)
36 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw in 'arch/arm64/kernel/sys.c' in the Linux kernel allows local users to bypass the 'strict page permissions' protection mechanism and modify the system-call table and, consequently, gain privileges by leveraging write access.
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Environment:
Last Closed: 2016-12-21 05:31:11 EST
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2016-12-13 09:25:04 EST 
The flaw in the code in 'arch/arm64/kernel/sys.c' in the Linux kernel allows local users to bypass the "strict page permissions" protection mechanism and modify the system-call table, and consequently gain privileges, by leveraging write access.

Upstream fix:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c623b33b4e9599c6ac5076f7db7369eb9869aa04

References:

http://source.android.com/security/bulletin/2016-12-01.html

https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8967
Comment 3 Vladis Dronov 2016-12-21 05:31:11 EST 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 as code with the flaw is not present in the products listed.

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG-2 as code with the flaw is not built and shipped in the products listed.
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