debian/patches/extra/CVE-2016-7157-scsi-mptconfig-fix-an-assert-expression.patch

   1 From a0e2a28c08472ad3468c2f75d20fe1ca02ef8c0b Mon Sep 17 00:00:00 2001
   2 From: Prasad J Pandit <pjp@fedoraproject.org>
   3 Date: Wed, 31 Aug 2016 17:36:07 +0530
   4 Subject: [PATCH 6/6] scsi: mptconfig: fix an assert expression
   5
   6 When LSI SAS1068 Host Bus emulator builds configuration page
   7 headers, mptsas_config_pack() should assert that the size
   8 fits in a byte.  However, the size is expressed in 32-bit
   9 units, so up to 1020 bytes fit.  The assertion was only
  10 allowing replies up to 252 bytes, so fix it.
  11
  12 Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
  13 Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
  14 Message-Id: <1472645167-30765-2-git-send-email-ppandit@redhat.com>
  15 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
  16 ---
  17  hw/scsi/mptconfig.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 diff --git a/hw/scsi/mptconfig.c b/hw/scsi/mptconfig.c
  21 index 7071854..3e4f400 100644
  22 --- a/hw/scsi/mptconfig.c
  23 +++ b/hw/scsi/mptconfig.c
  24 @@ -158,7 +158,7 @@ static size_t mptsas_config_pack(uint8_t **data, const char *fmt, ...)
  25      va_end(ap);
  26
  27      if (data) {
  28 -        assert(ret < 256 && (ret % 4) == 0);
  29 +        assert(ret / 4 < 256 && (ret % 4) == 0);
  30          stb_p(*data + 1, ret / 4);
  31      }
  32      return ret;
  33 --
  34 2.1.4
  35