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-rw-r--r--c/src/exec/rtems/src/intr.c3
-rw-r--r--cpukit/rtems/src/intr.c3
2 files changed, 6 insertions, 0 deletions
diff --git a/c/src/exec/rtems/src/intr.c b/c/src/exec/rtems/src/intr.c
index 754a9d298f..d446515c72 100644
--- a/c/src/exec/rtems/src/intr.c
+++ b/c/src/exec/rtems/src/intr.c
@@ -58,6 +58,9 @@ rtems_status_code rtems_interrupt_catch(
if ( !_ISR_Is_valid_user_handler( (void *) new_isr_handler ) )
return RTEMS_INVALID_ADDRESS;
+ if ( !_ISR_Is_valid_user_handler( (void *) old_isr_handler ) )
+ return RTEMS_INVALID_ADDRESS;
+
_ISR_Install_vector(
vector, (proc_ptr)new_isr_handler, (proc_ptr *)old_isr_handler );
diff --git a/cpukit/rtems/src/intr.c b/cpukit/rtems/src/intr.c
index 754a9d298f..d446515c72 100644
--- a/cpukit/rtems/src/intr.c
+++ b/cpukit/rtems/src/intr.c
@@ -58,6 +58,9 @@ rtems_status_code rtems_interrupt_catch(
if ( !_ISR_Is_valid_user_handler( (void *) new_isr_handler ) )
return RTEMS_INVALID_ADDRESS;
+ if ( !_ISR_Is_valid_user_handler( (void *) old_isr_handler ) )
+ return RTEMS_INVALID_ADDRESS;
+
_ISR_Install_vector(
vector, (proc_ptr)new_isr_handler, (proc_ptr *)old_isr_handler );