From e7c3f6b4365f3162f8e25d58f76410aca28719a2 Mon Sep 17 00:00:00 2001 From: Stefan Weil Date: Tue, 4 Sep 2012 07:35:57 +0200 Subject: [PATCH] target-arm: Fix potential buffer overflow 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 Reviewed-by: Peter Maydell Signed-off-by: Aurelien Jarno Signed-off-by: Michael Roth --- 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;