diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 2a2a1d996a57a..d76f8b9b214f9 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -327,6 +327,9 @@ static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
 	if (blk_validate_block_size(blksize))
 		return -EINVAL;
 
+	if (bytesize < 0)
+		return -EINVAL;
+
 	nbd->config->bytesize = bytesize;
 	nbd->config->blksize_bits = __ffs(blksize);
 
@@ -1112,6 +1115,9 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
 	struct nbd_sock *nsock;
 	int err;
 
+	/* Arg will be cast to int, check it to avoid overflow */
+	if (arg > INT_MAX)
+		return -EINVAL;
 	sock = nbd_get_socket(nbd, arg, &err);
 	if (!sock)
 		return err;
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index 15880a68faadc..271c87cd6049c 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -46,6 +46,10 @@ static int efivarfs_d_compare(const struct dentry *dentry,
 {
 	int guid = len - EFI_VARIABLE_GUID_LEN;
 
+	/* Parallel lookups may produce a temporary invalid filename */
+	if (guid <= 0)
+		return 1;
+
 	if (name->len != len)
 		return 1;
 
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index a8af5bb58573c..61116077822d6 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4307,6 +4307,12 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
 		}
 	}
 
+	chan = l2cap_chan_hold_unless_zero(chan);
+	if (!chan) {
+		err = -EBADSLT;
+		goto unlock;
+	}
+
 	err = 0;
 
 	l2cap_chan_lock(chan);
@@ -4336,6 +4342,7 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
 	}
 
 	l2cap_chan_unlock(chan);
+	l2cap_chan_put(chan);
 
 unlock:
 	mutex_unlock(&conn->chan_lock);
@@ -4625,33 +4632,29 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn,
 
 	BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid);
 
-	mutex_lock(&conn->chan_lock);
-
-	chan = __l2cap_get_chan_by_scid(conn, dcid);
+	chan = l2cap_get_chan_by_scid(conn, dcid);
 	if (!chan) {
-		mutex_unlock(&conn->chan_lock);
 		cmd_reject_invalid_cid(conn, cmd->ident, dcid, scid);
 		return 0;
 	}
 
-	l2cap_chan_hold(chan);
-	l2cap_chan_lock(chan);
-
 	rsp.dcid = cpu_to_le16(chan->scid);
 	rsp.scid = cpu_to_le16(chan->dcid);
 	l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
 
 	chan->ops->set_shutdown(chan);
 
+	l2cap_chan_unlock(chan);
+	mutex_lock(&conn->chan_lock);
+	l2cap_chan_lock(chan);
 	l2cap_chan_del(chan, ECONNRESET);
+	mutex_unlock(&conn->chan_lock);
 
 	chan->ops->close(chan);
 
 	l2cap_chan_unlock(chan);
 	l2cap_chan_put(chan);
 
-	mutex_unlock(&conn->chan_lock);
-
 	return 0;
 }
 
@@ -4671,33 +4674,28 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn,
 
 	BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid);
 
-	mutex_lock(&conn->chan_lock);
-
-	chan = __l2cap_get_chan_by_scid(conn, scid);
+	chan = l2cap_get_chan_by_scid(conn, scid);
 	if (!chan) {
-		mutex_unlock(&conn->chan_lock);
 		return 0;
 	}
 
-	l2cap_chan_hold(chan);
-	l2cap_chan_lock(chan);
-
 	if (chan->state != BT_DISCONN) {
 		l2cap_chan_unlock(chan);
 		l2cap_chan_put(chan);
-		mutex_unlock(&conn->chan_lock);
 		return 0;
 	}
 
+	l2cap_chan_unlock(chan);
+	mutex_lock(&conn->chan_lock);
+	l2cap_chan_lock(chan);
 	l2cap_chan_del(chan, 0);
+	mutex_unlock(&conn->chan_lock);
 
 	chan->ops->close(chan);
 
 	l2cap_chan_unlock(chan);
 	l2cap_chan_put(chan);
 
-	mutex_unlock(&conn->chan_lock);
-
 	return 0;
 }
 
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 97121e7726ad6..5c608eecdd0e9 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1069,7 +1069,7 @@ static int ip6mr_cache_report(struct mr_table *mrt, struct sk_buff *pkt,
 		   And all this only to mangle msg->im6_msgtype and
 		   to set msg->im6_mbz to "mbz" :-)
 		 */
-		skb_push(skb, -skb_network_offset(pkt));
+		__skb_pull(skb, skb_network_offset(pkt));
 
 		skb_push(skb, sizeof(*msg));
 		skb_reset_transport_header(skb);
diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
index 687d95dce0852..086950b83edf1 100644
--- a/net/ipv6/seg6_hmac.c
+++ b/net/ipv6/seg6_hmac.c
@@ -35,6 +35,7 @@
 #include <net/xfrm.h>
 
 #include <crypto/hash.h>
+#include <crypto/utils.h>
 #include <net/seg6.h>
 #include <net/genetlink.h>
 #include <net/seg6_hmac.h>
@@ -269,7 +270,7 @@ bool seg6_hmac_validate_skb(struct sk_buff *skb)
 	if (seg6_hmac_compute(hinfo, srh, &ipv6_hdr(skb)->saddr, hmac_output))
 		return false;
 
-	if (memcmp(hmac_output, tlv->hmac, SEG6_HMAC_FIELD_LEN) != 0)
+	if (crypto_memneq(hmac_output, tlv->hmac, SEG6_HMAC_FIELD_LEN))
 		return false;
 
 	return true;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 03a41684f58ec..582d75698191a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3623,6 +3623,10 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 			break;
 		goto queue;
 	case WLAN_CATEGORY_S1G:
+		if (len < offsetofend(typeof(*mgmt),
+				      u.action.u.s1g.action_code))
+			break;
+
 		switch (mgmt->u.action.u.s1g.action_code) {
 		case WLAN_S1G_TWT_SETUP:
 		case WLAN_S1G_TWT_TEARDOWN:
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index f10f4e6d3fb85..ecd409e1c5ce9 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -338,20 +338,28 @@ snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor
 
 	len = le16_to_cpu(cluster->wLength);
 	c = 0;
-	p += sizeof(struct uac3_cluster_header_descriptor);
+	p += sizeof(*cluster);
+	len -= sizeof(*cluster);
 
-	while (((p - (void *)cluster) < len) && (c < channels)) {
+	while (len > 0 && (c < channels)) {
 		struct uac3_cluster_segment_descriptor *cs_desc = p;
 		u16 cs_len;
 		u8 cs_type;
 
+		if (len < sizeof(*cs_desc))
+			break;
 		cs_len = le16_to_cpu(cs_desc->wLength);
+		if (len < cs_len)
+			break;
 		cs_type = cs_desc->bSegmentType;
 
 		if (cs_type == UAC3_CHANNEL_INFORMATION) {
 			struct uac3_cluster_information_segment_descriptor *is = p;
 			unsigned char map;
 
+			if (cs_len < sizeof(*is))
+				break;
+
 			/*
 			 * TODO: this conversion is not complete, update it
 			 * after adding UAC3 values to asound.h
@@ -453,6 +461,7 @@ snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor
 			chmap->map[c++] = map;
 		}
 		p += cs_len;
+		len -= cs_len;
 	}
 
 	if (channels < c)
@@ -873,7 +882,7 @@ snd_usb_get_audioformat_uac3(struct snd_usb_audio *chip,
 	u64 badd_formats = 0;
 	unsigned int num_channels;
 	struct audioformat *fp;
-	u16 cluster_id, wLength;
+	u16 cluster_id, wLength, cluster_wLength;
 	int clock = 0;
 	int err;
 
@@ -1000,6 +1009,16 @@ snd_usb_get_audioformat_uac3(struct snd_usb_audio *chip,
 		return ERR_PTR(-EIO);
 	}
 
+	cluster_wLength = le16_to_cpu(cluster->wLength);
+	if (cluster_wLength < sizeof(*cluster) ||
+	    cluster_wLength > wLength) {
+		dev_err(&dev->dev,
+			"%u:%d : invalid Cluster Descriptor size\n",
+			iface_no, altno);
+		kfree(cluster);
+		return ERR_PTR(-EIO);
+	}
+
 	num_channels = cluster->bNrChannels;
 	chmap = convert_chmap_v3(cluster);
 	kfree(cluster);
diff --git a/sound/usb/validate.c b/sound/usb/validate.c
index 6fe206f6e9110..4f4e8e87a14cd 100644
--- a/sound/usb/validate.c
+++ b/sound/usb/validate.c
@@ -221,6 +221,17 @@ static bool validate_uac3_feature_unit(const void *p,
 	return d->bLength >= sizeof(*d) + 4 + 2;
 }
 
+static bool validate_uac3_power_domain_unit(const void *p,
+					    const struct usb_desc_validator *v)
+{
+	const struct uac3_power_domain_descriptor *d = p;
+
+	if (d->bLength < sizeof(*d))
+		return false;
+	/* baEntities[] + wPDomainDescrStr */
+	return d->bLength >= sizeof(*d) + d->bNrEntities + 2;
+}
+
 static bool validate_midi_out_jack(const void *p,
 				   const struct usb_desc_validator *v)
 {
@@ -285,6 +296,7 @@ static const struct usb_desc_validator audio_validators[] = {
 	      struct uac3_clock_multiplier_descriptor),
 	/* UAC_VERSION_3, UAC3_SAMPLE_RATE_CONVERTER: not implemented yet */
 	/* UAC_VERSION_3, UAC3_CONNECTORS: not implemented yet */
+	FUNC(UAC_VERSION_3, UAC3_POWER_DOMAIN, validate_uac3_power_domain_unit),
 	{ } /* terminator */
 };