CVE Explorer
CVE-2026-10663
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 s
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/zephyrproject-rtos/zephyr","defaultStatus":"unaffected","packageName":"zephyr","product":"zephyr","programFiles":["subsys/usb/host/usbh_core.c","subsys/usb/host/usbh_device.c"],"vendor":"zephyrproject","versions":[{"lessThan":"4.5.0","status":"affected","version":"4.4.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f4dea58b82241156e1b6a2b0408343b6c441686f9a18dfe8b5ac45800b5d85b8 · sha256:5266bac02bb10351… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f4dea58b82241156e1b6a2b0408343b6c441686f9a18dfe8b5ac45800b5d85b8 · sha256:5266bac02bb10351… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"use-after-free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f4dea58b82241156e1b6a2b0408343b6c441686f9a18dfe8b5ac45800b5d85b8 · sha256:5266bac02bb10351… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"Fix commit","tags":["patch"],"url":"https://github.com/zephyrproject-rtos/zephyr/commit/4b87a8f161a44cb19505fa97db7cf72f64d49165"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f4dea58b82241156e1b6a2b0408343b6c441686f9a18dfe8b5ac45800b5d85b8 · sha256:5266bac02bb10351… · /containers/cna/references/0
{"name":"GHSA-26q8-xjq3-f5p6","url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-26q8-xjq3-f5p6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f4dea58b82241156e1b6a2b0408343b6c441686f9a18dfe8b5ac45800b5d85b8 · sha256:5266bac02bb10351… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.