CVE-2025-40092

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-40092
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40092.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-40092
Downstream
Related
Published
2025-10-30T09:47:59Z
Modified
2026-08-12T03:51:19Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
usb: gadget: f_ncm: Refactor bind path to use __free()
Details

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

usb: gadget: f_ncm: Refactor bind path to use __free()

After an bind/unbind cycle, the ncm->notify_req is left stale. If a subsequent bind fails, the unified error label attempts to free this stale request, leading to a NULL pointer dereference when accessing ep->ops->free_request.

Refactor the error handling in the bind path to use the __free() automatic cleanup mechanism.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 Call trace: usb_ep_free_request+0x2c/0xec ncm_bind+0x39c/0x3dc usb_add_function+0xcc/0x1f0 configfs_composite_bind+0x468/0x588 gadget_bind_driver+0x104/0x270 really_probe+0x190/0x374 __driver_probe_device+0xa0/0x12c driver_probe_device+0x3c/0x218 __device_attach_driver+0x14c/0x188 bus_for_each_drv+0x10c/0x168 __device_attach+0xfc/0x198 device_initial_probe+0x14/0x24 bus_probe_device+0x94/0x11c device_add+0x268/0x48c usb_add_gadget+0x198/0x28c dwc3_gadget_init+0x700/0x858 __dwc3_set_mode+0x3cc/0x664 process_scheduled_works+0x1d8/0x488 worker_thread+0x244/0x334 kthread+0x114/0x1bc ret_from_fork+0x10/0x20

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40092.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9f6ce4240a2bf456402c15c06768059e5973f28c
Fixed
185193a4714aa9c78437a7a1858fbe5771f0f45c
Fixed
f37de8dec6a4c379b4b8486003a1de00ff8cff3b
Fixed
1cde4516295a030cb8ab4c93114ca3b6c3c6a1e2
Fixed
d3fe7143928d8dfa2ec7bac9f906b48bc75b98ee
Fixed
ed78f4d6079d872432b1ed54f155ef61965d3137
Fixed
75a5b8d4ddd4eb6b16cb0b475d14ff4ae64295ef

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40092.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.38
Fixed
5.15.196
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.158
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.114
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.55
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.17.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40092.json"