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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2022-05-12 20:20:37 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-06-17 10:43:11 +0200 |
| commit | dda8ad0aa8af937feb5113952fb7886c74315010 (patch) | |
| tree | 7fd7724e1a9ee71f27362abc956b93d9ad64f441 /drivers/firewire | |
| parent | 56ec3e755bd1041d35bdec020a99b327697ee470 (diff) | |
| download | linux-dda8ad0aa8af937feb5113952fb7886c74315010.tar.gz linux-dda8ad0aa8af937feb5113952fb7886c74315010.tar.bz2 linux-dda8ad0aa8af937feb5113952fb7886c74315010.zip | |
firewire: cdev: fix potential leak of kernel stack due to uninitialized value
Recent change brings potential leak of value on kernel stack to userspace
due to uninitialized value.
This commit fixes the bug.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: baa914cd81f5 ("firewire: add kernel API to access CYCLE_TIME register")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20220512112037.103142-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/core-cdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index c9fe5903725a..9c89f7d53e99 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1211,7 +1211,7 @@ static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg) struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2; struct fw_card *card = client->device->card; struct timespec64 ts = {0, 0}; - u32 cycle_time; + u32 cycle_time = 0; int ret = 0; local_irq_disable(); |