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117 lines
3.9 KiB
117 lines
3.9 KiB
6 months ago
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From dd5ab40204b1d78ec3bdbcfd5a38a8ffb72bdb50 Mon Sep 17 00:00:00 2001
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From: Kinga Tanska <kinga.tanska@intel.com>
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Date: Thu, 11 May 2023 04:55:12 +0200
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Subject: [PATCH 139/165] Fix unsafe string functions
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Add string length limitations where necessary to
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avoid buffer overflows.
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Signed-off-by: Kinga Tanska <kinga.tanska@intel.com>
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Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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---
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mdmon.c | 6 +++---
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mdopen.c | 4 ++--
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platform-intel.c | 2 +-
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super-intel.c | 6 +++---
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4 files changed, 9 insertions(+), 9 deletions(-)
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diff --git a/mdmon.c b/mdmon.c
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index cef5bbc8..a2038fe6 100644
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--- a/mdmon.c
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+++ b/mdmon.c
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@@ -240,7 +240,7 @@ static int make_control_sock(char *devname)
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return -1;
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addr.sun_family = PF_LOCAL;
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- strcpy(addr.sun_path, path);
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+ snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", path);
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umask(077); /* ensure no world write access */
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if (bind(sfd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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close(sfd);
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@@ -389,7 +389,7 @@ int main(int argc, char *argv[])
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if (all) {
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struct mdstat_ent *mdstat, *e;
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- int container_len = strlen(container_name);
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+ int container_len = strnlen(container_name, MD_NAME_MAX);
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/* launch an mdmon instance for each container found */
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mdstat = mdstat_read(0, 0);
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@@ -472,7 +472,7 @@ static int mdmon(char *devnm, int must_fork, int takeover)
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pfd[0] = pfd[1] = -1;
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container = xcalloc(1, sizeof(*container));
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- strcpy(container->devnm, devnm);
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+ snprintf(container->devnm, MD_NAME_MAX, "%s", devnm);
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container->arrays = NULL;
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container->sock = -1;
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diff --git a/mdopen.c b/mdopen.c
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index d3022a54..3daa71f9 100644
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--- a/mdopen.c
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+++ b/mdopen.c
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@@ -193,14 +193,14 @@ int create_mddev(char *dev, char *name, int autof, int trustworthy,
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if (dev) {
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if (strncmp(dev, DEV_MD_DIR, DEV_MD_DIR_LEN) == 0) {
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- strcpy(cname, dev + DEV_MD_DIR_LEN);
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+ snprintf(cname, MD_NAME_MAX, "%s", dev + DEV_MD_DIR_LEN);
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} else if (strncmp(dev, "/dev/", 5) == 0) {
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char *e = dev + strlen(dev);
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while (e > dev && isdigit(e[-1]))
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e--;
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if (e[0])
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num = strtoul(e, NULL, 10);
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- strcpy(cname, dev+5);
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+ snprintf(cname, MD_NAME_MAX, "%s", dev + 5);
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cname[e-(dev+5)] = 0;
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/* name *must* be mdXX or md_dXX in this context */
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if (num < 0 ||
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diff --git a/platform-intel.c b/platform-intel.c
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index 914164c0..eb6e1b7e 100644
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--- a/platform-intel.c
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+++ b/platform-intel.c
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@@ -214,7 +214,7 @@ struct sys_dev *device_by_id_and_path(__u16 device_id, const char *path)
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static int devpath_to_ll(const char *dev_path, const char *entry, unsigned long long *val)
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{
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- char path[strlen(dev_path) + strlen(entry) + 2];
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+ char path[strnlen(dev_path, PATH_MAX) + strnlen(entry, PATH_MAX) + 2];
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int fd;
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int n;
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diff --git a/super-intel.c b/super-intel.c
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index 824c1356..ce813172 100644
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--- a/super-intel.c
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+++ b/super-intel.c
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@@ -7043,7 +7043,7 @@ active_arrays_by_format(char *name, char* hba, struct md_list **devlist,
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int fd = -1;
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while (dev && !is_fd_valid(fd)) {
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char *path = xmalloc(strlen(dev->name) + strlen("/dev/") + 1);
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- num = sprintf(path, "%s%s", "/dev/", dev->name);
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+ num = snprintf(path, PATH_MAX, "%s%s", "/dev/", dev->name);
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if (num > 0)
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fd = open(path, O_RDONLY, 0);
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if (num <= 0 || !is_fd_valid(fd)) {
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@@ -7935,7 +7935,7 @@ static int kill_subarray_imsm(struct supertype *st, char *subarray_id)
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if (i < current_vol)
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continue;
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- sprintf(subarray, "%u", i);
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+ snprintf(subarray, sizeof(subarray), "%u", i);
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if (is_subarray_active(subarray, st->devnm)) {
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pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
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current_vol, i);
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@@ -11308,7 +11308,7 @@ static const char *imsm_get_disk_controller_domain(const char *path)
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char *drv=NULL;
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struct stat st;
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- strcpy(disk_path, disk_by_path);
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+ strncpy(disk_path, disk_by_path, PATH_MAX);
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strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1);
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if (stat(disk_path, &st) == 0) {
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struct sys_dev* hba;
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--
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2.40.1
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