diff options
Diffstat (limited to 'sound/soc/sof')
| -rw-r--r-- | sound/soc/sof/control.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/sof/control.c b/sound/soc/sof/control.c index 9465611156d5..0352d2b61358 100644 --- a/sound/soc/sof/control.c +++ b/sound/soc/sof/control.c @@ -300,6 +300,10 @@ int snd_sof_bytes_ext_put(struct snd_kcontrol *kcontrol, const struct snd_ctl_tlv __user *tlvd = (const struct snd_ctl_tlv __user *)binary_data; + /* make sure we have at least a header */ + if (size < sizeof(struct snd_ctl_tlv)) + return -EINVAL; + /* * The beginning of bytes data contains a header from where * the length (as bytes) is needed to know the correct copy @@ -308,6 +312,13 @@ int snd_sof_bytes_ext_put(struct snd_kcontrol *kcontrol, if (copy_from_user(&header, tlvd, sizeof(const struct snd_ctl_tlv))) return -EFAULT; + /* make sure TLV info is consistent */ + if (header.length + sizeof(struct snd_ctl_tlv) > size) { + dev_err_ratelimited(scomp->dev, "error: inconsistent TLV, data %d + header %zu > %d\n", + header.length, sizeof(struct snd_ctl_tlv), size); + return -EINVAL; + } + /* be->max is coming from topology */ if (header.length > be->max) { dev_err_ratelimited(scomp->dev, "error: Bytes data size %d exceeds max %d.\n", |