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Candidate: CVE-2009-0747
Description:
The ext4_isize function in fs/ext4/ext4.h in the Linux kernel
2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 uses the
i_size_high structure member during operations on arbitrary
types of files, which allows local users to cause a denial of
service (CPU consumption and error-message flood) by
attempting to mount a crafted ext4 filesystem.
References:
http://bugzilla.kernel.org/show_bug.cgi?id=12375
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=06a279d636734da32bb62dd2f7b0ade666f65d7c
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7
Ubuntu-Description:
Notes:
jmm> ext4 is marked as experimental and the vulnerability fairly
jmm> obscure, I don't think we should spend energy on this. Dann,
jmm> if you don't object I'll mark this as "unimportant" in the
jmm> security tracker
Bugs:
upstream: released (2.6.28.7, 2.6.29-rc4)
linux-2.6: released (2.6.28-2) [bugfix/all/stable/2.6.28.7.patch]
2.6.18-etch-security: N/A
2.6.24-etch-security: N/A "code not present"
2.6.26-lenny-security: released (2.6.26-13lenny2) [bugfix/all/ext4-only-use-i_size_high-for-regular-files.patch]
2.6.15-dapper-security:
2.6.22-gutsy-security:
2.6.24-hardy-security:
2.6.27-intrepid-security:
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