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path: root/drivers/media/dvb-core/dvb_vb2.c
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Diffstat (limited to 'drivers/media/dvb-core/dvb_vb2.c')
-rw-r--r--drivers/media/dvb-core/dvb_vb2.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index a1bd6d9c9223..909df82fed33 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -354,6 +354,12 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
+ struct vb2_queue *q = &ctx->vb_q;
+
+ if (b->index >= q->num_buffers) {
+ dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ return -EINVAL;
+ }
vb2_core_querybuf(&ctx->vb_q, b->index, b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
@@ -378,8 +384,13 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
+ struct vb2_queue *q = &ctx->vb_q;
int ret;
+ if (b->index >= q->num_buffers) {
+ dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ return -EINVAL;
+ }
ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,

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