CVE-2025-40094

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Source
https://cve.org/CVERecord?id=CVE-2025-40094
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40094.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-40094
Downstream
Related
Published
2025-10-30T09:48:02Z
Modified
2026-08-12T03:51:22Z
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_acm: Refactor bind path to use __free()
Details

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

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

After an bind/unbind cycle, the acm->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 gs_free_req+0x30/0x44 acm_bind+0x1b8/0x1f4 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-2025-40094.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
1f1ba11b64947051fc32aa15fcccef6463b433f7
Fixed
c5d116862dd3ed162d079738a5ebddf9fceea850
Fixed
2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175
Fixed
e348d18fb0124b662cfefb3001733b49da428215
Fixed
201a66d8e6630762e760e1d78f1d149da1691e7b
Fixed
c4301e4dd6b32faccb744f1c2320e64235b68d3b
Fixed
47b2116e54b4a854600341487e8b55249e926324

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40094.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.27
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-2025-40094.json"