CVE-2011-0463

Published: 9 April 2011

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 before 2.6.39-rc1 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.

From the Ubuntu Security Team

Goldwyn Rodrigues discovered that the OCFS2 filesystem did not correctly clear memory when writing certain file holes. A local attacker could exploit this to read uninitialized data from the disk, leading to a loss of privacy.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Released (2.6.24-29.90)
	karmic	Not vulnerable
	lucid	Released (2.6.32-32.62)
	maverick	Released (2.6.35-30.52)
	natty	Released (2.6.38-9.43)
	upstream	Released (2.6.39~rc1)
	Patches: upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=272b62c1f0f6f742046e45b50b6fec98860208a0
linux-ec2 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.32-316.30)
	maverick	Ignored (end of life)
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-fsl-imx51 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.31-609.26)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Released (2.6.35-30.54~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Not vulnerable (2.6.38-9.43~lucid1)
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-mvl-dove Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Ignored (end of life)
	lucid	Released (2.6.32-217.34)
	maverick	Released (2.6.32-417.34)
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-source-2.6.15 Launchpad, Ubuntu, Debian	dapper	Not vulnerable
	hardy	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Does not exist
	natty	Does not exist
	upstream	Released (2.6.39~rc1)
linux-ti-omap4 Launchpad, Ubuntu, Debian	dapper	Does not exist
	hardy	Does not exist
	karmic	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.23)
	natty	Released (2.6.38-1209.13)
	upstream	Released (2.6.39~rc1)

References

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