| Subject | Re: [Stable-review] [34-longterm 224/247] fs/partitions/ldm.c: fix oops caused by corrupted partition table | From | Ben Hutchings <> | Date | Fri, 24 Jun 2011 00:14:54 +0100 |
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On Thu, 2011-06-23 at 13:34 -0400, Paul Gortmaker wrote: > From: Timo Warns <Warns@pre-sense.de> > > ------------------- > This is a commit scheduled for the next v2.6.34 longterm release. > If you see a problem with using this for longterm, please comment. > ------------------- > > commit c340b1d640001c8c9ecff74f68fd90422ae2448a upstream. > > The kernel automatically evaluates partition tables of storage devices. > The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains > a bug that causes a kernel oops on certain corrupted LDM partitions. > A kernel subsystem seems to crash, because, after the oops, the kernel no > longer recognizes newly connected storage devices. > > The patch validates the value of vblk_size. [...]
This doesn't completely fix the possibility of a buffer overflow. You also need commit cae13fe4cc3f24820ffb990c09110626837e85d4.
Ben.
-- Ben Hutchings The two most common things in the universe are hydrogen and stupidity. [unhandled content-type:application/pgp-signature] |