Bug 1866254 (CVE-2011-0463) - CVE-2011-0463 kernel: ocfs2_prepare_page_for_write function does not properly handle holes that cross page boundaries leads to information exposure
Summary: CVE-2011-0463 kernel: ocfs2_prepare_page_for_write function does not properly...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2011-0463
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: 1866255
Blocks: 1866256
TreeView+ depends on / blocked
 
Reported: 2020-08-05 08:30 UTC by Dhananjay Arunesh
Modified: 2021-11-12 20:07 UTC (History)
47 users (show)

Fixed In Version:
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Last Closed: 2020-08-05 19:27:54 UTC
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Description Dhananjay Arunesh 2020-08-05 08:30:58 UTC 
The ocfs2_prepare_page_for_write function in fs/ocfs2/aops.c in the Oracle Cluster File System 2 (OCFS2) subsystem in the Linux kernel does not properly handle holes that cross page boundaries, which allows local users to obtain potentially sensitive information from uninitialized disk locations by reading a file.

References:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=272b62c1f0f6f742046e45b50b6fec98860208a0
http://oss.oracle.com/pipermail/ocfs2-devel/2011-February/007846.html
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc1
Comment 1 Dhananjay Arunesh 2020-08-05 08:33:48 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1866255]
Comment 2 Alex 2020-08-05 13:14:30 UTC 
"OCFS2 kernel module" disabled by default for all kernels of rhel*.
Comment 3 Justin M. Forbes 2020-08-05 16:08:42 UTC 
This was fixed upstream almost 9 years ago, and has never impacted any currently supported version of Fedora.
Comment 4 Product Security DevOps Team 2020-08-05 19:27:54 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2011-0463
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