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authorDan Rosenberg <drosenberg@vsecurity.com>2010-09-27 12:30:28 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-27 16:29:06 -0700
commit252a52aa4fa22a668f019e55b3aac3ff71ec1c29 (patch)
tree93e0def0cef2ba85c203f2c20b86cda4b6190843 /drivers/infiniband
parent95929eff2cb01e9858779283795f4e3943ee020d (diff)
Fix pktcdvd ioctl dev_minor range check
The PKT_CTRL_CMD_STATUS device ioctl retrieves a pointer to a pktcdvd_device from the global pkt_devs array. The index into this array is provided directly by the user and is a signed integer, so the comparison to ensure that it falls within the bounds of this array will fail when provided with a negative index. This can be used to read arbitrary kernel memory or cause a crash due to an invalid pointer dereference. This can be exploited by users with permission to open /dev/pktcdvd/control (on many distributions, this is readable by group "cdrom"). Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> [ Rather than add a cast, just make the function take the right type -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/infiniband')
0 files changed, 0 insertions, 0 deletions