Bug 1596773 (CVE-2018-10876) - CVE-2018-10876 kernel: use-after-free in jbd2_journal_commit_transaction funtion
Summary: CVE-2018-10876 kernel: use-after-free in jbd2_journal_commit_transaction funtion
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-10876
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1596774 1596776 1615845
Blocks: 1596775
TreeView+ depends on / blocked
 
Reported: 2018-06-29 17:14 UTC by Laura Pardo
Modified: 2021-02-17 00:02 UTC (History)
49 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel's ext4 filesystem code. A use-after-free is possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image.
Clone Of:
Environment:
Last Closed: 2018-07-25 16:46:39 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:0525 0 None None None 2019-03-13 02:09:01 UTC

Description Laura Pardo 2018-06-29 17:14:19 UTC 
A flaw was found in Linux kernel in the ext4 filesystem code. A use-after-free is possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image.

References:

https://bugzilla.kernel.org/show_bug.cgi?id=199403

http://patchwork.ozlabs.org/patch/929239/

An upstream fix:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8844618d8aa7a9973e7b527d038a2a589665002c
Comment 1 Laura Pardo 2018-06-29 17:15:43 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1596774]
Comment 4 Justin M. Forbes 2018-07-16 14:31:31 UTC 
This is fixed for Fedora with the 4.17.6 stable kernel update
Comment 8 errata-xmlrpc 2019-03-13 02:08:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0525 https://access.redhat.com/errata/RHSA-2019:0525
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