Bug 1404284 (CVE-2015-8967) - CVE-2015-8967 kernel: arm64: Strict page permission bypass
Summary: CVE-2015-8967 kernel: arm64: Strict page permission bypass
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-8967
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1404286
TreeView+ depends on / blocked
 
Reported: 2016-12-13 14:25 UTC by Andrej Nemec
Modified: 2021-02-17 02:53 UTC (History)
36 users (show)

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.
Clone Of:
Environment:
Last Closed: 2016-12-21 10:31:11 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2016-12-13 14:25:04 UTC 
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 10:31:11 UTC 
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.
Note You need to log in before you can comment on or make changes to this bug.