words_count denotes the number of words in total payload, while data
points to payload of various property within it. When words_count
reaches last word, data can access memory beyond the total payload.
Avoid this case by not allowing the loop for the last word count.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 1a73374a04e5 ("media: venus: hfi_parser: add common capability parser")
Signed-off-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
---
drivers/media/platform/qcom/venus/hfi_parser.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/qcom/venus/hfi_parser.c b/drivers/media/platform/qcom/venus/hfi_parser.c
index 27d0172294d5154f4839e8cef172f9a619dfa305..20d9ea3626e9c4468d5f7dbd678743135f027c86 100644
--- a/drivers/media/platform/qcom/venus/hfi_parser.c
+++ b/drivers/media/platform/qcom/venus/hfi_parser.c
@@ -303,7 +303,7 @@ u32 hfi_parser(struct venus_core *core, struct venus_inst *inst, void *buf,
memset(core->caps, 0, sizeof(core->caps));
}
- while (words_count) {
+ while (words_count > 1) {
data = word + 1;
switch (*word) {
--
2.34.1
