diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-03-11 10:04:26 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2020-03-14 14:32:04 +0100 |
| commit | 6d3fbe919b839bae9d8ed22b4ae5a17b05cb209e (patch) | |
| tree | 979cca5bcec42f3039a78ee882bf3c91719f378b /drivers/pcmcia/rsrc_nonstatic.c | |
| parent | 7c8c5673f6cf1f35d5ffb1df3095526d28e6730a (diff) | |
pcmcia: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit. Fix it by replacing with scnprintf().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/rsrc_nonstatic.c')
| -rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 9e6922c08ef6..3b05760e69d6 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -1076,7 +1076,7 @@ static ssize_t show_io_db(struct device *dev, for (p = data->io_db.next; p != &data->io_db; p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; - ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), + ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), "0x%08lx - 0x%08lx\n", ((unsigned long) p->base), ((unsigned long) p->base + p->num - 1)); @@ -1133,7 +1133,7 @@ static ssize_t show_mem_db(struct device *dev, p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; - ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), + ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), "0x%08lx - 0x%08lx\n", ((unsigned long) p->base), ((unsigned long) p->base + p->num - 1)); @@ -1142,7 +1142,7 @@ static ssize_t show_mem_db(struct device *dev, for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { if (ret > (PAGE_SIZE - 10)) continue; - ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), + ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), "0x%08lx - 0x%08lx\n", ((unsigned long) p->base), ((unsigned long) p->base + p->num - 1)); |