diff options
| author | Dan Rosenberg <drosenberg@vsecurity.com> | 2010-12-22 13:58:27 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:53:54 -0700 |
| commit | 9d880cedb1727a53159a4e041c3ccf9f1dd7a4bc (patch) | |
| tree | f38173c823f508174d1becbea1764e6c64ed8d8d /mm/internal.h | |
| parent | 7847ca8cdb94454d21cf5af1a5d57994771ba93a (diff) | |
irda: prevent integer underflow in IRLMP_ENUMDEVICES
commit fdac1e0697356ac212259f2147aa60c72e334861 upstream.
If the user-provided len is less than the expected offset, the
IRLMP_ENUMDEVICES getsockopt will do a copy_to_user() with a very large
size value. While this isn't be a security issue on x86 because it will
get caught by the access_ok() check, it may leak large amounts of kernel
heap on other architectures. In any event, this patch fixes it.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Moritz Muehlenhoff <jmm@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm/internal.h')
0 files changed, 0 insertions, 0 deletions