Bug 260559 (CVE-2009-0745)

Summary:	Kernel: <2.6.27.19 <2.6.28.7 DOS in ext4_group_add (CVE-2009-0745)
Product:	Gentoo Security	Reporter:	Stefan Behte (RETIRED) <craig>
Component:	Kernel	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	hardened-kernel+disabled, kernel
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdff73f094e7220602cc3f8959c7230517976412
Whiteboard:	[linux <2.6.27.19] [linux >=2.6.28 <2.6.28.7] [gp < 2.6.27-12] [gp >= 2.6.28-1 < 2.6.28-4]
Package list:		Runtime testing required:	---

Description Stefan Behte (RETIRED) gentoo-dev

2009-02-27 22:04:31 UTC

CVE-2009-0745 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-0745):
  The ext4_group_add function in fs/ext4/resize.c in the Linux kernel
  2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not properly
  initialize the group descriptor during a resize (aka resize2fs)
  operation, which might allow local users to cause a denial of service
  (OOPS) by arranging for crafted values to be present in available
  memory.