diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-03-11 08:49:16 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-18 12:24:19 +0100 |
| commit | d108b132ea39cdcd63a1d6b4460fc4c7d183c7e5 (patch) | |
| tree | 1183967275197a2294b2cb366457aa32ca392587 /drivers/misc | |
| parent | f276d3ea884d1fedbdf9bc88cdd64e8ab4367ff9 (diff) | |
misc: mic: 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>
Link: https://lore.kernel.org/r/20200311074916.8783-1-tiwai@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mic/host/mic_x100.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/mic/host/mic_x100.c b/drivers/misc/mic/host/mic_x100.c index a7743312da9c..d18cda966912 100644 --- a/drivers/misc/mic/host/mic_x100.c +++ b/drivers/misc/mic/host/mic_x100.c @@ -350,10 +350,10 @@ mic_x100_load_command_line(struct mic_device *mdev, const struct firmware *fw) if (!buf) return -ENOMEM; - len += snprintf(buf, CMDLINE_SIZE - len, + len += scnprintf(buf, CMDLINE_SIZE - len, " mem=%dM", boot_mem); if (mdev->cosm_dev->cmdline) - snprintf(buf + len, CMDLINE_SIZE - len, " %s", + scnprintf(buf + len, CMDLINE_SIZE - len, " %s", mdev->cosm_dev->cmdline); memcpy_toio(cmd_line_va, buf, strlen(buf) + 1); kfree(buf); |