Bug 1551992 (CVE-2017-18216) - CVE-2017-18216 kernel: Null pointer dereference in fs/ocfs2/cluster/nodemanager.c allows local users to cause denial of service
Summary: CVE-2017-18216 kernel: Null pointer dereference in fs/ocfs2/cluster/nodemanag...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-18216
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: 1551993 1553321
Blocks: 1552000
TreeView+ depends on / blocked
 
Reported: 2018-03-06 10:02 UTC by Adam Mariš
Modified: 2021-02-17 00:42 UTC (History)
46 users (show)

Fixed In Version: kernel 4.15
Doc Type: If docs needed, set a value
Doc Text:
In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used.
Clone Of:
Environment:
Last Closed: 2018-03-08 16:56:06 UTC
Embargoed:

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Description Adam Mariš 2018-03-06 10:02:12 UTC 
In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used.

References:

https://marc.info/?t=150881360600002&r=1&w=2

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853bc26a7ea39e354b9f8889ae7ad1492ffa28d2
Comment 3 Vladis Dronov 2018-03-08 16:50:42 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1553321]
Comment 5 Justin M. Forbes 2018-03-08 17:01:13 UTC 
This was fixed for Fedora with the 4.15 rebases
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