cbcvebase.
CVE-2025-40094
published 2025-10-30

CVE-2025-40094: 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…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
4.2th percentile
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

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.158-1 (bookworm)linux 6.1.158-1 (bookworm)
debianlinux-6.1< linux 6.1.158-1 (bookworm)linux 6.1.158-1 (bookworm)
linuxlinux
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < c5d116862dd3ed162d079738a5ebddf9fceea850c5d116862dd3ed162d079738a5ebddf9fceea850
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 2b1546f7c5fc6c44555a8e7a2b34229d1dcd21752b1546f7c5fc6c44555a8e7a2b34229d1dcd2175
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < e348d18fb0124b662cfefb3001733b49da428215e348d18fb0124b662cfefb3001733b49da428215
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 201a66d8e6630762e760e1d78f1d149da1691e7b201a66d8e6630762e760e1d78f1d149da1691e7b
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < c4301e4dd6b32faccb744f1c2320e64235b68d3bc4301e4dd6b32faccb744f1c2320e64235b68d3b
linuxlinux>= 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 47b2116e54b4a854600341487e8b55249e92632447b2116e54b4a854600341487e8b55249e926324
linuxlinux_kernel>= 0 < 6.1.158-16.1.158-1
linuxlinux_kernel>= 0 < 6.12.57-16.12.57-1
linuxlinux_kernel>= 0 < 6.17.6-16.17.6-1
linuxlinux_kernel>= 0 < 5.15.0-170.1805.15.0-170.180
linuxlinux_kernel>= 0 < 6.8.0-106.1066.8.0-106.106
linuxlinux_kernel>= 0 < 6.17.0-14.146.17.0-14.14
linuxlinux_kernel>= 2.6.27 < 5.15.1965.15.196
linuxlinux_kernel>= 5.16.0 < 6.1.1586.1.158
linuxlinux_kernel>= 6.13.0 < 6.17.56.17.5
linuxlinux_kernel>= 6.2.0 < 6.6.1146.6.114
linuxlinux_kernel>= 6.7.0 < 6.12.556.12.55
msrcazl3_kernel_6.6.104.2-4_on_azure_linux_3.0
ubuntulinux-aws
ubuntulinux-azure-5.15
ubuntulinux-intel-iotg-5.15
ubuntulinux-oracle

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_msrc5.5MEDIUM
vendor_redhat5.5LOW
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