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Index: head/sys/opencrypto/cryptodev.c
===================================================================
--- head/sys/opencrypto/cryptodev.c
+++ head/sys/opencrypto/cryptodev.c
@@ -585,8 +585,8 @@
if (thash) {
cria.cri_alg = thash->type;
cria.cri_klen = sop->mackeylen * 8;
- if (thash->keysize != 0 &&
- sop->mackeylen > thash->keysize) {
+ if (sop->mackeylen > thash->keysize ||
+ sop->mackeylen < 0) {
CRYPTDEB("invalid mac key length");
error = EINVAL;
SDT_PROBE1(opencrypto, dev, ioctl, error,

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