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| author | Takashi Iwai <tiwai@suse.de> | 2019-10-22 17:45:14 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-10-22 17:47:32 +0200 |
| commit | ba8bf0967a154796be15c4983603aad0b05c3138 (patch) | |
| tree | 716eea9419e75bf4fb525f2329bae05c08d4da7a /sound | |
| parent | Merge tag 'asoc-fix-v5.4-rc4' of https://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
| download | linux-ba8bf0967a154796be15c4983603aad0b05c3138.tar.xz linux-ba8bf0967a154796be15c4983603aad0b05c3138.zip | |
ALSA: usb-audio: Fix copy&paste error in the validator
The recently introduced USB-audio descriptor validator had a stupid
copy&paste error that may lead to an unexpected overlook of too short
descriptors for processing and extension units. It's likely the cause
of the report triggered by syzkaller fuzzer. Let's fix it.
Fixes: 57f8770620e9 ("ALSA: usb-audio: More validations of descriptor units")
Reported-by: syzbot+0620f79a1978b1133fd7@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/s5hsgnkdbsl.wl-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/validate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/validate.c b/sound/usb/validate.c index 3c8f73a0eb12..a5e584b60dcd 100644 --- a/sound/usb/validate.c +++ b/sound/usb/validate.c @@ -75,7 +75,7 @@ static bool validate_processing_unit(const void *p, if (d->bLength < sizeof(*d)) return false; - len = d->bLength < sizeof(*d) + d->bNrInPins; + len = sizeof(*d) + d->bNrInPins; if (d->bLength < len) return false; switch (v->protocol) { |