diff --git a/module/icp/algs/aes/aes_impl.c b/module/icp/algs/aes/aes_impl.c
index 7c92a7c8d1..9d90914aac 100644
--- a/module/icp/algs/aes/aes_impl.c
+++ b/module/icp/algs/aes/aes_impl.c
@@ -424,13 +424,15 @@ icp_aes_impl_get(char *buffer, zfs_kernel_param_t *kp)
 	/* list mandatory options */
 	for (i = 0; i < ARRAY_SIZE(aes_impl_opts); i++) {
 		fmt = (impl == aes_impl_opts[i].sel) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, aes_impl_opts[i].name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    aes_impl_opts[i].name);
 	}
 
 	/* list all supported implementations */
 	for (i = 0; i < aes_supp_impl_cnt; i++) {
 		fmt = (i == impl) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, aes_supp_impl[i]->name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    aes_supp_impl[i]->name);
 	}
 
 	return (cnt);
diff --git a/module/icp/algs/blake3/blake3_impl.c b/module/icp/algs/blake3/blake3_impl.c
index 1692916cef..7bc4db2c98 100644
--- a/module/icp/algs/blake3/blake3_impl.c
+++ b/module/icp/algs/blake3/blake3_impl.c
@@ -282,16 +282,16 @@ blake3_param_get(char *buffer, zfs_kernel_param_t *unused)
 
 	/* cycling */
 	fmt = IMPL_FMT(impl, IMPL_CYCLE);
-	cnt += sprintf(buffer + cnt, fmt, "cycle");
+	cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt, "cycle");
 
 	/* list fastest */
 	fmt = IMPL_FMT(impl, IMPL_FASTEST);
-	cnt += sprintf(buffer + cnt, fmt, "fastest");
+	cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt, "fastest");
 
 	/* list all supported implementations */
 	for (uint32_t i = 0; i < blake3_supp_impls_cnt; ++i) {
 		fmt = IMPL_FMT(impl, i);
-		cnt += sprintf(buffer + cnt, fmt,
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
 		    blake3_supp_impls[i]->name);
 	}
 
diff --git a/module/icp/algs/modes/gcm.c b/module/icp/algs/modes/gcm.c
index 16ef14b8cc..558a578090 100644
--- a/module/icp/algs/modes/gcm.c
+++ b/module/icp/algs/modes/gcm.c
@@ -1020,13 +1020,15 @@ icp_gcm_impl_get(char *buffer, zfs_kernel_param_t *kp)
 		}
 #endif
 		fmt = (impl == gcm_impl_opts[i].sel) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, gcm_impl_opts[i].name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    gcm_impl_opts[i].name);
 	}
 
 	/* list all supported implementations */
 	for (i = 0; i < gcm_supp_impl_cnt; i++) {
 		fmt = (i == impl) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, gcm_supp_impl[i]->name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    gcm_supp_impl[i]->name);
 	}
 
 	return (cnt);
diff --git a/module/zcommon/zfs_fletcher.c b/module/zcommon/zfs_fletcher.c
index 9a201842ea..44c8f486f6 100644
--- a/module/zcommon/zfs_fletcher.c
+++ b/module/zcommon/zfs_fletcher.c
@@ -903,12 +903,12 @@ fletcher_4_param_get(char *buffer, zfs_kernel_param_t *unused)
 
 	/* list fastest */
 	fmt = IMPL_FMT(impl, IMPL_FASTEST);
-	cnt += sprintf(buffer + cnt, fmt, "fastest");
+	cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt, "fastest");
 
 	/* list all supported implementations */
 	for (uint32_t i = 0; i < fletcher_4_supp_impls_cnt; ++i) {
 		fmt = IMPL_FMT(impl, i);
-		cnt += sprintf(buffer + cnt, fmt,
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
 		    fletcher_4_supp_impls[i]->name);
 	}
 
diff --git a/module/zfs/vdev_raidz_math.c b/module/zfs/vdev_raidz_math.c
index 2980f8acfb..66f211c430 100644
--- a/module/zfs/vdev_raidz_math.c
+++ b/module/zfs/vdev_raidz_math.c
@@ -653,13 +653,15 @@ zfs_vdev_raidz_impl_get(char *buffer, zfs_kernel_param_t *kp)
 	/* list mandatory options */
 	for (i = 0; i < ARRAY_SIZE(math_impl_opts) - 2; i++) {
 		fmt = (impl == math_impl_opts[i].sel) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, math_impl_opts[i].name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    math_impl_opts[i].name);
 	}
 
 	/* list all supported implementations */
 	for (i = 0; i < raidz_supp_impl_cnt; i++) {
 		fmt = (i == impl) ? "[%s] " : "%s ";
-		cnt += sprintf(buffer + cnt, fmt, raidz_supp_impl[i]->name);
+		cnt += kmem_scnprintf(buffer + cnt, PAGE_SIZE - cnt, fmt,
+		    raidz_supp_impl[i]->name);
 	}
 
 	return (cnt);