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-rw-r--r--include/osmocom/core/msgb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h
index 9c99cadf..b057caa0 100644
--- a/include/osmocom/core/msgb.h
+++ b/include/osmocom/core/msgb.h
@@ -373,6 +373,8 @@ static inline void msgb_reserve(struct msgb *msg, int len)
*/
static inline int msgb_trim(struct msgb *msg, int len)
{
+ if (len < 0)
+ MSGB_ABORT(msg, "Negative length is not allowed\n");
if (len > msg->data_len)
return -1;