[CVE-2011-2695] ext4: Fix max file size and logical block counting of extent format file
apw at canonical.com
Mon Sep 26 12:10:11 UTC 2011
Multiple off-by-one errors in the ext4 subsystem in the Linux
kernel before 3.0-rc5 allow local users to cause a denial of
service (BUG_ON and system crash) by accessing a sparse file in
extent format with a write operation involving a block number
corresponding to the largest possible 32-bit unsigned integer.
Fixes for this issue have hit oneiric and P via mainline. Following this
email are two patch sets. The first for lucid/fsl-imx51, the second for
lucid, maverick, maverick/ti-omap4, natty, and natty/ti-omap4.
The fix for lucid and up is identicle. I have tested this fix on Natty
using the reproduce-by in the patch. Testing before and after on other
Proposing for lucid, lucid/fsl-imx51, maverick, maverick/ti-omap4, natty,
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