CVE-2025-38643
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
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
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | defe9ce121160788547e8e6ec4438ad8a14f40dd | Unavailable | None listed |
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | b3d24038eb775f2f7a1dfef58d8e1dc444a12820 | Unavailable | None listed |
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | 4a63523d3541eef4cf504a9682e6fbe94ffe79a6 | Unavailable | None listed |
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | 7022df2248c08c6f75a01714163ac902333bf3db | Unavailable | None listed |
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | dbce810607726408f889d3358f4780fd1436861e | Unavailable | None listed |
| 26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d | affected | git | 2c5dee15239f3f3e31aa5c8808f18996c039e2c1 | Unavailable | None listed |
| 2dbb6faebb94d6d5ae87e5ea6be9280c366393e1 | affected | git | Unavailable | Unavailable | None listed |
| a4f85674e4693904ade7cbf6722d0d105d8062d8 | affected | git | Unavailable | Unavailable | None listed |
| e233cbaf8ecc5859f0417dd53899da4edb477991 | affected | git | Unavailable | Unavailable | None listed |
| 4.14.170 | affected | semver | 4.15 | Unavailable | None listed |
| 4.19.102 | affected | semver | 4.20 | Unavailable | None listed |
| 5.4.18 | affected | semver | 5.5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 6.1.164 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.118 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.57 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.15.10 | unaffected | semver | Unavailable | 6.15.* | None listed |
| 6.16.1 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |