Date: Thu, 10 Feb 2011 00:03:26 +0800 From: Eugene Teo <eugene@...hat.com> To: oss-security@...ts.openwall.com CC: Dan Rosenberg <dan.j.rosenberg@...il.com> Subject: Re: CVE request: kernel: btrfs heap overflow On 02/10/2011 12:01 AM, Eugene Teo wrote: > On 02/09/2011 11:49 PM, Dan Rosenberg wrote: >> I'm not aware of any distributions that support 2.6.37 kernels, but as >> far as I know this doesn't affect CVE eligibility (please correct me >> if I'm wrong). > > Ok, I'm just asking. Please use CVE-2011-0696. Wrong, race condition. Please use CVE-2011-0699 instead. Thanks, Eugene > Eugene > >> On Wed, Feb 9, 2011 at 10:20 AM, Eugene Teo<eugene@...hat.com> wrote: >>> On 02/09/2011 10:27 PM, Dan Rosenberg wrote: >>>> >>>> Commit bf5fc093c5b625e4259203f1cee7ca73488a5620 refactored >>>> btrfs_ioctl_space_info() and introduced security issues. Since they >>>> were all introduced at once and fixed at the same time, one CVE should >>>> suffice. >>>> >>>> Due to integer truncation or a signedness error in a typecasted >>>> comparison, an integer overflow in an allocation size calculation, and >>>> a failure to properly check bounds when copying data, it was possible >>>> for an unprivileged user to cause a denial-of-service due to writing >>>> to an invalid pointer (ZERO_SIZE_PTR) or cause a kernel heap overflow. >>>> >>>> -Dan >>>> >>>>  http://marc.info/?l=linux-kernel&m=129726078708425&w=2 >>> >>> Commit bf5fc093c was introduced very recently - v2.6.37-rc1 Sept last >>> year. >>> Do we have commercially supported kernels that are affected by this? >>> >>> Thanks, Eugene >>> >
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