From: Stefan Weil <sw@weilnetz.de>
To: Paul Brook <paul@codesourcery.com>,
Peter Maydell <peter.maydell@linaro.org>
Cc: Stefan Weil <sw@weilnetz.de>, qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] target-arm: Fix potential buffer overflow
Date: Tue, 4 Sep 2012 07:35:57 +0200 [thread overview]
Message-ID: <1346736957-24745-1-git-send-email-sw@weilnetz.de> (raw)
Report from smatch:
target-arm/helper.c:651 arm946_prbs_read(6) error:
buffer overflow 'env->cp15.c6_region' 8 <= 8
target-arm/helper.c:661 arm946_prbs_write(6) error:
buffer overflow 'env->cp15.c6_region' 8 <= 8
c7_region is an array with 8 elements, so the index must be less than 8.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
target-arm/helper.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index dceaa95..e27df96 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -645,7 +645,7 @@ static int pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri,
static int arm946_prbs_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
- if (ri->crm > 8) {
+ if (ri->crm >= 8) {
return EXCP_UDEF;
}
*value = env->cp15.c6_region[ri->crm];
@@ -655,7 +655,7 @@ static int arm946_prbs_read(CPUARMState *env, const ARMCPRegInfo *ri,
static int arm946_prbs_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
- if (ri->crm > 8) {
+ if (ri->crm >= 8) {
return EXCP_UDEF;
}
env->cp15.c6_region[ri->crm] = value;
--
1.7.10
next reply other threads:[~2012-09-04 5:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 5:35 Stefan Weil [this message]
2012-09-04 14:19 ` [Qemu-devel] [PATCH] target-arm: Fix potential buffer overflow Peter Maydell
2012-09-10 13:17 ` Aurelien Jarno
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