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| author | Tobias Tefke <tobias.tefke@gmail.com> | 2017-09-05 09:58:36 +0200 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-09-05 15:31:46 +0200 |
| commit | a1beff31cf3b220b7c983c1933ad5dbd438f89fc (patch) | |
| tree | f4ef400f8b5a3d4ac43d4d2f947e816f4f03333b /sound | |
| parent | f710aae4b3308d26962cc41a9645020d04074fa7 (diff) | |
Fix CVE-2012-6703 (integer overflow in ALSA subsystem)
Change-Id: I995b152a3766ebb8faec244849d90d7d2bd5c672
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/core/compress_offload.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 49a44d761..ab2d0ee74 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -468,6 +468,11 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream, unsigned int buffer_size; void *buffer; + /* check for integer overflows */ + if(params->buffer.fragment_size == 0 || + params->buffer.fragments > SIZE_MAX / params->buffer.fragment_size) + return -EINVAL; + buffer_size = params->buffer.fragment_size * params->buffer.fragments; if (stream->ops->copy) { buffer = NULL; |