CVE-2026-10663
- Source
- https://cve.org/CVERecord?id=CVE-2026-10663
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10663.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-10663
- Aliases
-
- GHSA-26q8-xjq3-f5p6
- Published
- 2026-07-12T16:16:48.576Z
- Modified
- 2026-07-22T03:22:05.662604Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- Use-after-free / double-free of the root USB device in the experimental USB host stack
- Details
-
In Zephyr's experimental USB host stack (CONFIGUSBHOSTSTACK), usbhdevicedisconnect() (subsys/usb/host/usbhdevice.c) freed the root usbdevice slab object without clearing the cached pointer ctx->root. The bus removal handler devremovedhandler() (subsys/usb/host/usbhcore.c) decides what to tear down solely from ctx->root, checking only that it is non-NULL.
Because UHC controller drivers (e.g. uhcmax3421e, uhcmcuxcommon) synthesize UHCEVTDEVREMOVED directly from physical bus line state with no debounce or state guard, an attacker with physical USB access (or a rogue device that bounces its connection) can deliver a second device-removed event after a root device disconnect. The handler then re-enters usbhdevicedisconnect() with the dangling pointer, locking a mutex inside the freed object (use-after-free), removing the freed node from the device list, and calling kmemslab_free() on the already-freed block (double-free). If the slab block has been reissued to a newly attached device in between, this corrupts a live object.
Impact is denial of service (crash) and memory corruption; the attack vector is physical/local. The flaw was introduced in v4.4.0 by the connect/disconnect refactor and is fixed by clearing ctx->root in usbhdevicedisconnect() before freeing.
- Database specific
{ "cna_assigner": "zephyr", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10663.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "4.4.0" }, { "fixed": "4.5.0" } ], "source": "AFFECTED_FIELD" } ], "cwe_ids": [ "CWE-416" ] }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10663.json
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-26q8-xjq3-f5p6
- https://nvd.nist.gov/vuln/detail/CVE-2026-10663
- https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165
- https://github.com/zephyrproject-rtos/zephyr
Affected packages
Git / github.com/zephyrproject-rtos/zephyr
Affected versions
v1.*
v2.*
v3.*
v4.*
zephyr-v1.*
zephyr-v2.*
zephyr-v3.*
Database specific
vanir_signatures
[
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"186773106463108639292772553781059795984",
"223122782302215634158413253591899361034",
"176991626273162628247147529634833342566",
"312981161834630232004569750504066215152",
"40890304743057277653843193880975452837",
"81664223227500460450116647334358313292"
]
},
"id": "CVE-2026-10663-33a861d0",
"signature_type": "Line",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165",
"target": {
"file": "subsys/usb/host/usbh_core.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"261813664720660468651625621251508825605",
"186332138495638370898799273590961676156",
"200812436544915787819133716032679124700",
"17503693560739695837090122530796988759",
"245572223277165571155098320665779759101",
"242296223376295587708009873576576028954"
]
},
"id": "CVE-2026-10663-aa195800",
"signature_type": "Line",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165",
"target": {
"file": "subsys/usb/host/usbh_device.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"length": 126.0,
"function_hash": "115250374827684420463248270656025555291"
},
"id": "CVE-2026-10663-e9c028ea",
"signature_type": "Function",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165",
"target": {
"function": "usbh_device_disconnect",
"file": "subsys/usb/host/usbh_device.c"
}
}
]
vanir_signatures_modified
"2026-07-22T03:22:05Z"
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10663.json"