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_sta
CVE-2025-38643
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-38643
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "defe9ce121160788547e8e6ec4438ad8a14f40dd",
"versionType": "git"
},
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "b3d24038eb775f2f7a1dfef58d8e1dc444a12820",
"versionType": "git"
},
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "4a63523d3541eef4cf504a9682e6fbe94ffe79a6",
"versionType": "git"
},
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "7022df2248c08c6f75a01714163ac902333bf3db",
"versionType": "git"
},
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "dbce810607726408f889d3358f4780fd1436861e",
"versionType": "git"
},
{
"status": "affected",
"version": "26ec17a1dc5ecdd8d91aba63ead6f8b5ad5dea0d",
"lessThan": "2c5dee15239f3f3e31aa5c8808f18996c039e2c1",
"versionType": "git"
},
{
"status": "affected",
"version": "2dbb6faebb94d6d5ae87e5ea6be9280c366393e1",
"versionType": "git"
},
{
"status": "affected",
"version": "a4f85674e4693904ade7cbf6722d0d105d8062d8",
"versionType": "git"
},
{
"status": "affected",
"version": "e233cbaf8ecc5859f0417dd53899da4edb477991",
"versionType": "git"
},
{
"status": "affected",
"version": "4.14.170",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.102",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.18",
"lessThan": "5.5",
"versionType": "semver"
}
],
"programFiles": [
"net/wireless/reg.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.164",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.118",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.57",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.10",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16.1",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/wireless/reg.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38643
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30607 · Revision 1
- Added to Heist Feed
- Publisher date