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

CVE-2025-40094
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.15 % · percentile 5 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

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

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < c5d116862dd3ed162d079738a5ebddf9fceea850 ; affected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175 ; affected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < e348d18fb0124b662cfefb3001733b49da428215 ; affected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 201a66d8e6630762e760e1d78f1d149da1691e7b ; affected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < c4301e4dd6b32faccb744f1c2320e64235b68d3b ; affected 1f1ba11b64947051fc32aa15fcccef6463b433f7 < 47b2116e54b4a854600341487e8b55249e926324
Linux · Linuxaffected 2.6.27 ; unaffected 0 < 2.6.27 ; unaffected 5.15.196 ≤ 5.15.* ; unaffected 6.1.158 ≤ 6.1.* ; unaffected 6.6.114 ≤ 6.6.* ; unaffected 6.12.55 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD