linux-cve-announce - CVE-2023-53764: wifi: ath12k: Handle lock during peer

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Message-ID: <2025120845-CVE-2023-53764-c257@gregkh>
Date: Mon,  8 Dec 2025 10:20:03 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53764: wifi: ath12k: Handle lock during peer_id find

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

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

wifi: ath12k: Handle lock during peer_id find

ath12k_peer_find_by_id() requires that the caller hold the
ab->base_lock. Currently the WBM error path does not hold
the lock and calling that function, leads to the
following lockdep_assert()in QCN9274:

[105162.160893] ------------[ cut here ]------------
[105162.160916] WARNING: CPU: 3 PID: 0 at drivers/net/wireless/ath/ath12k/peer.c:71 ath12k_peer_find_by_id+0x52/0x60 [ath12k]
[105162.160933] Modules linked in: ath12k(O) qrtr_mhi qrtr mac80211 cfg80211 mhi qmi_helpers libarc4 nvme nvme_core [last unloaded: ath12k(O)]
[105162.160967] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G        W  O       6.1.0-rc2+ #3
[105162.160972] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0056.2019.0506.1527 05/06/2019
[105162.160977] RIP: 0010:ath12k_peer_find_by_id+0x52/0x60 [ath12k]
[105162.160990] Code: 07 eb 0f 39 68 24 74 0a 48 8b 00 48 39 f8 75 f3 31 c0 5b 5d c3 48 8d bf b0 f2 00 00 be ff ff ff ff e8 22 20 c4 e2 85 c0 75 bf <0f> 0b eb bb 66 2e 0f 1f 84 00 00 00 00 00 41 54 4c 8d a7 98 f2 00
[105162.160996] RSP: 0018:ffffa223001acc60 EFLAGS: 00010246
[105162.161003] RAX: 0000000000000000 RBX: ffff9f0573940000 RCX: 0000000000000000
[105162.161008] RDX: 0000000000000001 RSI: ffffffffa3951c8e RDI: ffffffffa39a96d7
[105162.161013] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000000
[105162.161017] R10: ffffa223001acb40 R11: ffffffffa3d57c60 R12: ffff9f057394f2e0
[105162.161022] R13: ffff9f0573940000 R14: ffff9f04ecd659c0 R15: ffff9f04d5a9b040
[105162.161026] FS:  0000000000000000(0000) GS:ffff9f0575600000(0000) knlGS:0000000000000000
[105162.161031] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[105162.161036] CR2: 00001d5c8277a008 CR3: 00000001e6224006 CR4: 00000000003706e0
[105162.161041] Call Trace:
[105162.161046]  <IRQ>
[105162.161051]  ath12k_dp_rx_process_wbm_err+0x6da/0xaf0 [ath12k]
[105162.161072]  ? ath12k_dp_rx_process_err+0x80e/0x15a0 [ath12k]
[105162.161084]  ? __lock_acquire+0x4ca/0x1a60
[105162.161104]  ath12k_dp_service_srng+0x263/0x310 [ath12k]
[105162.161120]  ath12k_pci_ext_grp_napi_poll+0x1c/0x70 [ath12k]
[105162.161133]  __napi_poll+0x22/0x260
[105162.161141]  net_rx_action+0x2f8/0x380
[105162.161153]  __do_softirq+0xd0/0x4c9
[105162.161162]  irq_exit_rcu+0x88/0xe0
[105162.161169]  common_interrupt+0xa5/0xc0
[105162.161174]  </IRQ>
[105162.161179]  <TASK>
[105162.161184]  asm_common_interrupt+0x22/0x40

Handle spin lock/unlock in WBM error path to hold the necessary lock
expected by ath12k_peer_find_by_id().

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0-03171-QCAHKSWPL_SILICONZ-1

The Linux kernel CVE team has assigned CVE-2023-53764 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.3.4 with commit 9faf7c696610a348ca94a224d55c946b19b3279d
	Fixed in 6.4 with commit 95a389e2ff3212d866cc51c77d682d2934074eb8

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2023-53764
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/net/wireless/ath/ath12k/dp_rx.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/9faf7c696610a348ca94a224d55c946b19b3279d
	https://git.kernel.org/stable/c/95a389e2ff3212d866cc51c77d682d2934074eb8