{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40094", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.163Z", "datePublished": "2025-10-30T09:48:02.446Z", "dateUpdated": "2026-05-11T21:42:23.912Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:42:23.912Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_acm: Refactor bind path to use __free()\n\nAfter an bind/unbind cycle, the acm->notify_req is left stale. If a\nsubsequent bind fails, the unified error label attempts to free this\nstale request, leading to a NULL pointer dereference when accessing\nep->ops->free_request.\n\nRefactor the error handling in the bind path to use the __free()\nautomatic cleanup mechanism.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000020\nCall trace:\n usb_ep_free_request+0x2c/0xec\n gs_free_req+0x30/0x44\n acm_bind+0x1b8/0x1f4\n usb_add_function+0xcc/0x1f0\n configfs_composite_bind+0x468/0x588\n gadget_bind_driver+0x104/0x270\n really_probe+0x190/0x374\n __driver_probe_device+0xa0/0x12c\n driver_probe_device+0x3c/0x218\n __device_attach_driver+0x14c/0x188\n bus_for_each_drv+0x10c/0x168\n __device_attach+0xfc/0x198\n device_initial_probe+0x14/0x24\n bus_probe_device+0x94/0x11c\n device_add+0x268/0x48c\n usb_add_gadget+0x198/0x28c\n dwc3_gadget_init+0x700/0x858\n __dwc3_set_mode+0x3cc/0x664\n process_scheduled_works+0x1d8/0x488\n worker_thread+0x244/0x334\n kthread+0x114/0x1bc\n ret_from_fork+0x10/0x20"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_acm.c"], "versions": [{"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "c5d116862dd3ed162d079738a5ebddf9fceea850", "status": "affected", "versionType": "git"}, {"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175", "status": "affected", "versionType": "git"}, {"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "e348d18fb0124b662cfefb3001733b49da428215", "status": "affected", "versionType": "git"}, {"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "201a66d8e6630762e760e1d78f1d149da1691e7b", "status": "affected", "versionType": "git"}, {"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "c4301e4dd6b32faccb744f1c2320e64235b68d3b", "status": "affected", "versionType": "git"}, {"version": "1f1ba11b64947051fc32aa15fcccef6463b433f7", "lessThan": "47b2116e54b4a854600341487e8b55249e926324", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_acm.c"], "versions": [{"version": "2.6.27", "status": "affected"}, {"version": "0", "lessThan": "2.6.27", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.196", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.158", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.114", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.55", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.5", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.15.196"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.1.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.6.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.12.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.17.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c5d116862dd3ed162d079738a5ebddf9fceea850"}, {"url": "https://git.kernel.org/stable/c/2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175"}, {"url": "https://git.kernel.org/stable/c/e348d18fb0124b662cfefb3001733b49da428215"}, {"url": "https://git.kernel.org/stable/c/201a66d8e6630762e760e1d78f1d149da1691e7b"}, {"url": "https://git.kernel.org/stable/c/c4301e4dd6b32faccb744f1c2320e64235b68d3b"}, {"url": "https://git.kernel.org/stable/c/47b2116e54b4a854600341487e8b55249e926324"}], "title": "usb: gadget: f_acm: Refactor bind path to use __free()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_acm: Refactor bind path to use __free()\n\nAfter an bind/unbind cycle, the acm->notify_req is left stale. If a\nsubsequent bind fails, the unified error label attempts to free this\nstale request, leading to a NULL pointer dereference when accessing\nep->ops->free_request.\n\nRefactor the error handling in the bind path to use the __free()\nautomatic cleanup mechanism.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000020\nCall trace:\n usb_ep_free_request+0x2c/0xec\n gs_free_req+0x30/0x44\n acm_bind+0x1b8/0x1f4\n usb_add_function+0xcc/0x1f0\n configfs_composite_bind+0x468/0x588\n gadget_bind_driver+0x104/0x270\n really_probe+0x190/0x374\n __driver_probe_device+0xa0/0x12c\n driver_probe_device+0x3c/0x218\n __device_attach_driver+0x14c/0x188\n bus_for_each_drv+0x10c/0x168\n __device_attach+0xfc/0x198\n device_initial_probe+0x14/0x24\n bus_probe_device+0x94/0x11c\n device_add+0x268/0x48c\n usb_add_gadget+0x198/0x28c\n dwc3_gadget_init+0x700/0x858\n __dwc3_set_mode+0x3cc/0x664\n process_scheduled_works+0x1d8/0x488\n worker_thread+0x244/0x334\n kthread+0x114/0x1bc\n ret_from_fork+0x10/0x20"}], "id": "CVE-2025-40094", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-30T10:15:33.900", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/201a66d8e6630762e760e1d78f1d149da1691e7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47b2116e54b4a854600341487e8b55249e926324"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c4301e4dd6b32faccb744f1c2320e64235b68d3b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5d116862dd3ed162d079738a5ebddf9fceea850"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e348d18fb0124b662cfefb3001733b49da428215"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "usb: gadget: f_acm: Refactor bind path to use __free()", "id": "2407329", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2407329"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2025-40094", "public_date": "2025-10-30T09:48:02Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40094\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40094\nhttps://git.kernel.org/stable/c/201a66d8e6630762e760e1d78f1d149da1691e7b\nhttps://git.kernel.org/stable/c/2b1546f7c5fc6c44555a8e7a2b34229d1dcd2175\nhttps://git.kernel.org/stable/c/47b2116e54b4a854600341487e8b55249e926324\nhttps://git.kernel.org/stable/c/c4301e4dd6b32faccb744f1c2320e64235b68d3b\nhttps://git.kernel.org/stable/c/c5d116862dd3ed162d079738a5ebddf9fceea850\nhttps://git.kernel.org/stable/c/e348d18fb0124b662cfefb3001733b49da428215"]}

{"created": "2025-10-30T14:37:23.205499+00:00", "updated": "2025-10-30T14:37:23.205523+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}