CVE-2025-38643— wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
Possible ATT&CK Techniques 1AI
T1205.002 · Socket FiltersAffected Version Matrix 20
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< defe9ce121160788547e8e6ec4438ad8a14f40dd | affected |
26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< b3d24038eb775f2f7a1dfef58d8e1dc444a12820 | affected | ||
26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< 4a63523d3541eef4cf504a9682e6fbe94ffe79a6 | affected | ||
26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< 7022df2248c08c6f75a01714163ac902333bf3db | affected | ||
26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< dbce810607726408f889d3358f4780fd1436861e | affected | ||
26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d< 2c5dee15239f3f3e31aa5c8808f18996c039e2c1 | affected | ||
2dbb6faebb94d6d5ae87e5ea6be9280c366393e1 | affected | ||
a4f85674e4693904ade7cbf6722d0d105d8062d8 | affected | ||
| … +12 more rows | |||
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I. Basic Information for CVE-2025-38643
Vulnerability Information
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Vulnerability Title
wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac() Callers of wdev_chandef() must hold the wiphy mutex. But the worker cfg80211_propagate_cac_done_wk() never takes the lock. Which triggers the warning below with the mesh_peer_connected_dfs test from hostapd and not (yet) released mac80211 code changes: WARNING: CPU: 0 PID: 495 at net/wireless/chan.c:1552 wdev_chandef+0x60/0x165 Modules linked in: CPU: 0 UID: 0 PID: 495 Comm: kworker/u4:2 Not tainted 6.14.0-rc5-wt-g03960e6f9d47 #33 13c287eeabfe1efea01c0bcc863723ab082e17cf Workqueue: cfg80211 cfg80211_propagate_cac_done_wk Stack: 00000000 00000001 ffffff00 6093267c 00000000 6002ec30 6d577c50 60037608 00000000 67e8d108 6063717b 00000000 Call Trace: [<6002ec30>] ? _printk+0x0/0x98 [<6003c2b3>] show_stack+0x10e/0x11a [<6002ec30>] ? _printk+0x0/0x98 [<60037608>] dump_stack_lvl+0x71/0xb8 [<6063717b>] ? wdev_chandef+0x60/0x165 [<6003766d>] dump_stack+0x1e/0x20 [<6005d1b7>] __warn+0x101/0x20f [<6005d3a8>] warn_slowpath_fmt+0xe3/0x15d [<600b0c5c>] ? mark_lock.part.0+0x0/0x4ec [<60751191>] ? __this_cpu_preempt_check+0x0/0x16 [<600b11a2>] ? mark_held_locks+0x5a/0x6e [<6005d2c5>] ? warn_slowpath_fmt+0x0/0x15d [<60052e53>] ? unblock_signals+0x3a/0xe7 [<60052f2d>] ? um_set_signals+0x2d/0x43 [<60751191>] ? __this_cpu_preempt_check+0x0/0x16 [<607508b2>] ? lock_is_held_type+0x207/0x21f [<6063717b>] wdev_chandef+0x60/0x165 [<605f89b4>] regulatory_propagate_dfs_state+0x247/0x43f [<60052f00>] ? um_set_signals+0x0/0x43 [<605e6bfd>] cfg80211_propagate_cac_done_wk+0x3a/0x4a [<6007e460>] process_scheduled_works+0x3bc/0x60e [<6007d0ec>] ? move_linked_works+0x4d/0x81 [<6007d120>] ? assign_work+0x0/0xaa [<6007f81f>] worker_thread+0x220/0x2dc [<600786ef>] ? set_pf_worker+0x0/0x57 [<60087c96>] ? to_kthread+0x0/0x43 [<6008ab3c>] kthread+0x2d3/0x2e2 [<6007f5ff>] ? worker_thread+0x0/0x2dc [<6006c05b>] ? calculate_sigpending+0x0/0x56 [<6003b37d>] new_thread_handler+0x4a/0x64 irq event stamp: 614611 hardirqs last enabled at (614621): [<00000000600bc96b>] __up_console_sem+0x82/0xaf hardirqs last disabled at (614630): [<00000000600bc92c>] __up_console_sem+0x43/0xaf softirqs last enabled at (614268): [<00000000606c55c6>] __ieee80211_wake_queue+0x933/0x985 softirqs last disabled at (614266): [<00000000606c52d6>] __ieee80211_wake_queue+0x643/0x985
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于cfg80211_check_and_end_cac缺少锁保护，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-38643
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-08-22 · 60 CVEs total
| CVE-2025-38660 | 9.8 CRITICAL | [ceph] parse_longname(): strrchr() expects NUL-terminated string |
| CVE-2025-38658 | 8.8 HIGH | nvmet: pci-epf: Do not complete commands twice if nvmet_req_init() fails |
| CVE-2024-58239 | 8.2 HIGH | tls: stop recv() if initial process_rx_list gave us non-DATA |
| CVE-2025-38627 | 7.8 HIGH | f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic |
| CVE-2025-38659 | 7.8 HIGH | gfs2: No more self recovery |
| CVE-2025-38656 | 7.8 HIGH | wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start() |
| CVE-2025-38653 | 7.8 HIGH | proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al |
| CVE-2025-38675 | 7.8 HIGH | xfrm: state: initialize state_ptrs earlier in xfrm_state_find |
| CVE-2025-38667 | 7.8 HIGH | iio: fix potential out-of-bound write |
| CVE-2025-38619 | 7.8 HIGH | media: ti: j721e-csi2rx: fix list_del corruption |
| CVE-2025-38640 | 7.8 HIGH | bpf: Disable migration in nf_hook_run_bpf(). |
| CVE-2025-38670 | 7.8 HIGH | arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack() |
| CVE-2025-38618 | 7.8 HIGH | vsock: Do not allow binding to VMADDR_PORT_ANY |
| CVE-2025-38617 | 7.8 HIGH | net/packet: fix a race in packet_set_ring() and packet_notifier() |
| CVE-2025-38616 | 7.8 HIGH | tls: handle data disappearing from under the TLS ULP |
| CVE-2025-38657 | 7.3 HIGH | wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch() |
| CVE-2025-38652 | 7.3 HIGH | f2fs: fix to avoid out-of-boundary access in devs.path |
| CVE-2025-38661 | 7.1 HIGH | platform/x86: alienware-wmi-wmax: Fix `dmi_system_id` array |
| CVE-2025-38639 | 7.1 HIGH | netfilter: xt_nfacct: don't assume acct name is null-terminated |
| CVE-2025-38662 | 7.1 HIGH | ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv |
Showing top 20 of 60 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
Same vendor: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
V. Comments for CVE-2025-38643
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