diff -r 3df15d379c93 sys/opencrypto/cryptosoft.c
--- a/sys/opencrypto/cryptosoft.c	Sat Jul 04 12:04:15 2020 +0000
+++ b/sys/opencrypto/cryptosoft.c	Sat Jul 04 16:16:13 2020 +0000
@@ -1096,7 +1096,7 @@ swcr_freesession(void *arg, u_int64_t ti
 			}
 			if (swd->sw_octx) {
 				explicit_memset(swd->sw_octx, 0, swd->sw_klen);
-				kmem_free(swd->sw_octx, axf->ctxsize);
+				kmem_free(swd->sw_octx, swd->sw_klen);
 			}
 			break;