From f88e08f34d2d4f398f23797707e1c50cd306e405 Mon Sep 17 00:00:00 2001 From: Bernd Schubert Date: Tue, 25 Jun 2024 07:05:19 +0200 Subject: [PATCH] Add nullptr check in fuse_session_mount The pointer did not have any sanity check. Addresses https://github.com/libfuse/libfuse/issues/979 --- lib/fuse_lowlevel.c | 5 +++++ lib/mount_util.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c index 74b0424..8bfeb01 100644 --- a/lib/fuse_lowlevel.c +++ b/lib/fuse_lowlevel.c @@ -3256,6 +3256,11 @@ int fuse_session_mount(struct fuse_session *se, const char *mountpoint) { int fd; + if (mountpoint == NULL) { + fuse_log(FUSE_LOG_ERR, "Invalid null-ptr mountpoint!\n"); + return -1; + } + /* * Make sure file descriptors 0, 1 and 2 are open, otherwise chaos * would ensue. diff --git a/lib/mount_util.c b/lib/mount_util.c index dd32276..02a84ef 100644 --- a/lib/mount_util.c +++ b/lib/mount_util.c @@ -359,6 +359,11 @@ int fuse_mnt_parse_fuse_fd(const char *mountpoint) int fd = -1; int len = 0; + if (mountpoint == NULL) { + fprintf(stderr, "Invalid null-ptr mount-point!\n"); + return -1; + } + if (sscanf(mountpoint, "/dev/fd/%u%n", &fd, &len) == 1 && len == strlen(mountpoint)) { return fd; -- 2.30.2