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
- 2026-07-12T16:16:48Z
- Modified
- 2026-07-22T03:22:05Z
- 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 (CONFIG_USB_HOST_STACK), usbh_device_disconnect() (subsys/usb/host/usbh_device.c) freed the root usb_device slab object without clearing the cached pointer ctx->root. The bus removal handler dev_removed_handler() (subsys/usb/host/usbh_core.c) decides what to tear down solely from ctx->root, checking only that it is non-NULL.
Because UHC controller drivers (e.g. uhc_max3421e, uhc_mcux_common) synthesize UHC_EVT_DEV_REMOVED 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 usbh_device_disconnect() with the dangling pointer, locking a mutex inside the freed object (use-after-free), removing the freed node from the device list, and calling k_mem_slab_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 usbh_device_disconnect() before freeing.
- Database specific
{ "cna_assigner": "zephyr", "cwe_ids": [ "CWE-416" ], "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" } ] }- 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
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10663.json"
vanir_signatures
[
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],
"threshold": 0.9
},
"id": "CVE-2026-10663-33a861d0",
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"source": "https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165",
"target": {
"file": "subsys/usb/host/usbh_core.c"
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"id": "CVE-2026-10663-aa195800",
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"source": "https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165",
"target": {
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]
vanir_signatures_modified
"2026-07-22T03:22:05Z"