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Bug 260561 (CVE-2009-0746)

Summary: Kernel: <2.6.27.19 <2.6.28.7 make_indexed_dir ext4 DOS (CVE-2009-0746)
Product: Gentoo Security Reporter: Stefan Behte (RETIRED) <craig>
Component: KernelAssignee: 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=e6b8bc09ba2075cd91fbffefcd2778b1a00bd76f
Whiteboard: [linux <2.6.27.19] [linux >=2.6.28 <2.6.28.7]
Package list:
Runtime testing required: ---

Description Stefan Behte (RETIRED) gentoo-dev Security 2009-02-27 22:20:11 UTC 
CVE-2009-0746 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-0746):
  The make_indexed_dir function in fs/ext4/namei.c in the Linux kernel
  2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate
  a certain rec_len field, which allows local users to cause a denial
  of service (OOPS) by attempting to mount a crafted ext4 filesystem.