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Bug 88740 - Kernel: sysfs_write_file() integer overflow (CAN-2005-0867)
Summary: Kernel: sysfs_write_file() integer overflow (CAN-2005-0867)
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All All
: High normal (vote)
Assignee: Gentoo Security
URL:
Whiteboard: [linux >=2.6 < 2.6.11]
Keywords:
Depends on:
Blocks:
 
Reported: 2005-04-11 09:07 UTC by Thierry Carrez (RETIRED)
Modified: 2009-05-03 14:31 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
Patch (88740.patch,742 bytes, patch)
2005-04-15 15:00 UTC, Tim Yamin (RETIRED) 		no flags Details | Diff
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Description Thierry Carrez (RETIRED) gentoo-dev 2005-04-11 09:07:02 UTC 
From Ubuntu's latest:

Alexander Nyberg discovered an integer overflow in the sysfs_write_file() function. A local attacker could exploit this to crash the kernel or possibly even execute arbitrary code with root privileges by writing to an user-writable file in /sys under certain low-memory conditions. However, there are very few cases where a user-writeable sysfs file actually exists. (CAN-2005-0867)
Comment 1 Tim Yamin (RETIRED) gentoo-dev 2005-04-15 15:00:14 UTC 
Created attachment 56386 [details, diff]
Patch
Comment 2 Joshua Kinard gentoo-dev 2005-04-23 22:29:40 UTC 
mips-sources fixed.
Comment 3 Daniel Drake (RETIRED) gentoo-dev 2005-04-27 13:46:49 UTC 
gentoo-sources-2.6 unaffected
Comment 4 Robert Paskowitz (RETIRED) gentoo-dev 2005-05-17 16:41:14 UTC 
Should be all fixed. http://kiss.gentoo.org/dev/viewBug.php?BugID=88740
Comment 5 Tim Yamin (RETIRED) gentoo-dev 2005-05-27 11:41:21 UTC 
All fixed, closing bug.