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
Summary: CVE-2015-9016 kernel: Race condition in block/blk-mq.c:blk_mq_tag_to_rq() can...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-9016
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1544702
TreeView+ depends on / blocked
 
Reported: 2018-02-13 10:36 UTC by Adam Mariš
Modified: 2021-02-17 00:49 UTC (History)
47 users (show)

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.
Clone Of:
Environment:
Last Closed: 2018-02-22 13:22:46 UTC
Embargoed:

Attachments (Terms of Use)

Description Adam Mariš 2018-02-13 10:36:30 UTC 
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 2018-02-20 02:49:43 UTC 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux.
Note You need to log in before you can comment on or make changes to this bug.