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Bug 1544700 - (CVE-2015-9016) CVE-2015-9016 kernel: Race condition in block/blk-mq.c:blk_mq_tag_to_rq() can lead to kernel oops
CVE-2015-9016 kernel: Race condition in block/blk-mq.c:blk_mq_tag_to_rq() can...
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=20150809,repor...
: Security
Depends On:
Blocks: 1544702
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Reported: 2018-02-13 05:36 EST by Adam Mariš
Modified: 2018-02-22 08:22 EST (History)
47 users (show)

See Also:
Fixed In Version: kernel 4.3
Doc Type: If docs needed, set a value
Doc Text:
A race condition was found in the block multi queue subsystem of the Linux kernel. This may lead to a kernel panic or have another unknown side affect.
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Clone Of:
Environment:
Last Closed: 2018-02-22 08:22:46 EST
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Adam Mariš 2018-02-13 05:36:30 EST 
Race condition was found in block/blk-mq.c in blk_mq_tag_to_rq() function that can lead to kernel oops or possible disk write corruption by removing tagged writes intended to be flushed.


Upstream patch:

https://github.com/torvalds/linux/commit/0048b4837affd153897ed1222283492070027aa9

Reference:

https://source.android.com/security/bulletin/2018-02-01#kernel-components
Comment 2 Wade Mealing 2018-02-19 21:49:43 EST 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux.
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