releases/2.6.32.17/tpm-readpubek-output-struct-fix.patch

   1 From 02a077c52ef7631275a79862ffd9f3dbe9d38bc2 Mon Sep 17 00:00:00 2001
   2 From: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
   3 Date: Mon, 14 Jun 2010 13:58:22 -0300
   4 Subject: TPM: ReadPubEK output struct fix
   5
   6 From: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
   7
   8 commit 02a077c52ef7631275a79862ffd9f3dbe9d38bc2 upstream.
   9
  10 This patch adds a missing element of the ReadPubEK command output,
  11 that prevents future overflow of this buffer when copying the
  12 TPM output result into it.
  13
  14 Prevents a kernel panic in case the user tries to read the
  15 pubek from sysfs.
  16
  17 Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
  18 Signed-off-by: James Morris <jmorris@namei.org>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  20
  21 ---
  22  drivers/char/tpm/tpm.h |    1 +
  23  1 file changed, 1 insertion(+)
  24
  25 --- a/drivers/char/tpm/tpm.h
  26 +++ b/drivers/char/tpm/tpm.h
  27 @@ -224,6 +224,7 @@ struct      tpm_readpubek_params_out {
  28         u8      algorithm[4];
  29         u8      encscheme[2];
  30         u8      sigscheme[2];
  31 +       __be32  paramsize;
  32         u8      parameters[12]; /*assuming RSA*/
  33         __be32  keysize;
  34         u8      modulus[256];