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Bug 1489078 - (CVE-2017-12146) CVE-2017-12146 kernel: Race condition in driver_override implementation
CVE-2017-12146 kernel: Race condition in driver_override implementation
Status: CLOSED NOTABUG
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=20170525,repor...
: Security
Depends On: 1489079 1494199
Blocks: 1489083
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Reported: 2017-09-06 12:10 EDT by Adam Mariš
Modified: 2017-09-25 10:47 EDT (History)
48 users (show)

See Also:
Fixed In Version: kernel 4.13
Doc Type: Bug Fix
Doc Text:
It was found that the driver_override implementation in base/platform.c in the Linux kernel is susceptible to race condition when different threads are reading vs storing a different driver override.
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Clone Of:
Environment:
Last Closed: 2017-09-21 12:25:35 EDT
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-09-06 12:10:26 EDT 
It was found that the driver_override implementation in base/platform.c is susceptible to race condition when different threads are reading vs storing a different driver override.

Upstream patch:

https://github.com/torvalds/linux/commit/6265539776a0810b7ce6398c27866ddb9c6bd154

Introduced by commit:

https://github.com/torvalds/linux/commit/3d713e0e382e
Comment 1 Adam Mariš 2017-09-06 12:11:48 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1489079]
Comment 2 Adam Mariš 2017-09-06 12:48:17 EDT 
External References:

https://source.android.com/security/bulletin/2017-09-01
Comment 3 Justin M. Forbes 2017-09-06 14:06:05 EDT 
This was fixed in the 4.12.1 stable release and is on all currently supported Fedora releases.
Comment 7 Vladis Dronov 2017-09-21 12:24:09 EDT 
Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2 as the code with the flaw is not present in the products listed.
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