Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Tue, 5 Apr 2011 13:00:28 -0400
From: Dan Rosenberg <>
Subject: CVE request: kernel: two issues in mpt2sas

"At two points in handling device ioctls via /dev/mpt2ctl,
user-supplied length values are used to copy data from userspace into
heap buffers without bounds checking, allowing controllable heap
corruption and subsequently privilege escalation.

Additionally, user-supplied values are used to determine the size of a
copy_to_user() as well as the offset into the buffer to be read, with
no bounds checking, allowing users to read arbitrary kernel memory."

These issues require access to the /dev/mpt2sas device (LSI MPT Fusion
SAS 2.0).  While the kernel creates this device file root-root 660 by
default, I've seen it with more open permissions on live systems, so
perhaps there's some common use case that requires modifying these
default permissions.



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.