[libvirt] [PATCH] Fix latent buffer overflow in qemudOpenMonitorUnix.
Fix a possible latent bug in qemudOpenMonitorUnix(). If the pathname
to the monitor is very long (i.e. >= UNIX_MAX_PATH), then strncpy will
*not* place a final \0 on the string (see "man strncpy").
NULL terminate the buffer to ensure we don't run off the end.
Signed-off-by: Chris Lalancette <clalance(a)redhat.com>
---
src/qemu_driver.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/src/qemu_driver.c b/src/qemu_driver.c
index 9fcc07a..4f173b7 100644
--- a/src/qemu_driver.c
+++ b/src/qemu_driver.c
@@ -910,6 +910,7 @@ qemudOpenMonitorUnix(virConnectPtr conn,
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, monitor, sizeof(addr.sun_path));
+ NUL_TERMINATE(addr.sun_path);
do {
ret = connect(monfd, (struct sockaddr *) &addr, sizeof(addr));
--
1.6.0.6