[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Tue, 27 Apr 2010 10:37:07 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: coley@...us.mitre.org
Subject: CVE request - gfs2 kernel issue
When a struct gfs2_quota straddles a page boundary, the two pages
required to write out the complete quota were not being updated.
Instead, the first page was being written beyond its end. This buffer
overflow can cause a kernel panic. Since only the value field in struct
gfs2_quota needs to be updated and it's a 64-bit quantity that doesn't
ever straddle a page boundary by itself, we can seek to the proper page
where this value lies and write to it.
Steps to reproduce:
https://bugzilla.redhat.com/show_bug.cgi?id=586006
My colleague will be posting the patch for the upstream kernel soon.
Thanks, eugene
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
