In the Linux kernel, the following vulnerability has been resolved:

wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames

mwifiex_11n_dispatch_amsdu_pkt() splits an A-MSDU with
ieee80211_amsdu_to_8023s() and walks the resulting subframes. For each
subframe it passes the subframe data pointer to
mwifiex_process_tdls_action_frame(), but pairs it with skb->len, the
length of the A-MSDU parent, instead of rx_skb->len:

	rx_skb = __skb_dequeue(&list);
	rx_hdr = (struct rx_packet_hdr *)rx_skb->data;
	if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
	    ntohs(rx_hdr->eth803_hdr.h_proto) == ETH_P_TDLS) {
		mwifiex_process_tdls_action_frame(priv, (u8 *)rx_hdr,
						  skb->len);
	}

The parent is not a valid description of that buffer, and may not be
valid memory at all. ieee80211_amsdu_to_8023s() ends with

	if (!reuse_skb)
		dev_kfree_skb(skb);

and it only sets reuse_skb when the parent is linear, is not a
head_frag, and is being consumed as the *last* subframe. So when the
parent does not qualify for reuse it has already been freed, and the
read of skb->len is a use-after-free. When it is reused, skb->len is
the length of the last subframe, applied to every earlier subframe,
which over-states the buffer whenever an earlier subframe is shorter.

The callee cannot absorb a wrong length, because it derives its own
ceiling from the value it is given. Each frame type computes

	ies_len = len - sizeof(struct ethhdr) - TDLS_*_FIX_LEN;

and the element walk is then bounded entirely against that ceiling,

	for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
		u8 ie_len = pos[1];

		if (pos + 2 + ie_len > end)
			break;

so a too-large len moves end past the end of the subframe and the walk
reads and copies beyond it. The A-MSDU layout is chosen by the sender,
which makes the difference between the last subframe and a shorter
earlier one remotely selectable. Reaching this requires TDLS support in
firmware and the TDLS ethertype on the subframe.

The other caller, mwifiex_process_rx_packet(), is correct: it passes a
pointer and a length that describe the same region of the RX buffer.

Pass rx_skb->len, the length of the subframe actually being parsed.

https://git.kernel.org/stable/c/25e5a3fe4f15e30f74eca42cbf3bcc3a3fbeda79

https://git.kernel.org/stable/c/5a21ab03829cb6d2682c127f22e2b9cd63b4393f

https://git.kernel.org/stable/c/99a948382af8a225e2d5e54a7052158cd6281cc6

https://git.kernel.org/stable/c/c9dcfe6b8b71369e1d732e2ff622c3696a2f032c

https://git.kernel.org/stable/c/ece2ebb34247d573142617dfc534a9dc11ba59be

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"776f742040ca5eb6242c60f29ac73d5752a5b621","lessThan":"25e5a3fe4f15e30f74eca42cbf3bcc3a3fbeda79","versionType":"git","status":"affected"},{"version":"776f742040ca5eb6242c60f29ac73d5752a5b621","lessThan":"ece2ebb34247d573142617dfc534a9dc11ba59be","versionType":"git","status":"affected"},{"version":"776f742040ca5eb6242c60f29ac73d5752a5b621","lessThan":"c9dcfe6b8b71369e1d732e2ff622c3696a2f032c","versionType":"git","status":"affected"},{"version":"776f742040ca5eb6242c60f29ac73d5752a5b621","lessThan":"5a21ab03829cb6d2682c127f22e2b9cd63b4393f","versionType":"git","status":"affected"},{"version":"776f742040ca5eb6242c60f29ac73d5752a5b621","lessThan":"99a948382af8a225e2d5e54a7052158cd6281cc6","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"4.5","status":"affected"},{"version":"0","lessThan":"4.5","versionType":"semver","status":"unaffected"},{"version":"6.6.151","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.103","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc6","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]