Bug 1775187 (CVE-2019-19036) - CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrfs/ctree.c
Summary: CVE-2019-19036 kernel: null-pointer dereference in btrfs_root_node in fs/btrf...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19036
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: 1775189 1813255 1813256
Blocks: 1775188
TreeView+ depends on / blocked
 
Reported: 2019-11-21 14:34 UTC by Dhananjay Arunesh
Modified: 2021-10-25 22:15 UTC (History)
43 users (show)

Fixed In Version:
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Doc Text:
A NULL pointer dereference flaw in the btrfs_root_node in fs/btrfs/ctree.c may occur if the rcu_dereference function return is not validated in time of failure. This flaw could allow an attacker to crash the system or leak internal kernel information.
Clone Of:
Environment:
Last Closed: 2021-10-25 22:15:42 UTC
Embargoed:

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Description Dhananjay Arunesh 2019-11-21 14:34:18 UTC 
A NULL pointer dereference flaw in btrfs_root_node in fs/btrfs/ctree.c may occur if rcu_dereference function return is not validated in time of failure.  This flaw could allow an attacker to crash the system or leak internal kernel information.


Reference:
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036
Comment 1 Dhananjay Arunesh 2019-11-21 14:35:25 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1775189]
Comment 4 Rohit Keshri 2020-03-13 12:03:35 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 6 Justin M. Forbes 2020-06-26 17:10:27 UTC 
This was fixed for Fedora with the 5.3.4 stable kernel updates.
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