Date: Tue, 07 Apr 2009 13:41:44 +0800 From: Eugene Teo <eugene@...hat.com> To: Marcus Meissner <meissner@...e.de> CC: oss-security@...ts.openwall.com, security@...nel.org, sfrench@...ibm.com Subject: Re: CVE request? buffer overflow in CIFS in 2.6.* Hi Marcus, Marcus Meissner wrote: > Fixes a kmalloc area overflow in CIFS, number of overwritten bytes > is depending on the codepage converted to. > > The data seems to come from a remote generated reply blob even, correct > me if I am wrong. :/ Looks like it's part of the session setup. The NativeFileSystem field is part of the Tree Connect response (TCon for short). > And I wonder if "len*2" is sufficient, can't a UCS -> UTF8 conversion > generate more than 2 byte utf-8 characters for 1 ucs character? I understand that someone from your side is working on a better patch for this. Do keep us updated when it goes upstream. Thanks, Eugene -- Eugene Teo / Red Hat Security Response Team
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