128 lines
5.8 KiB
JSON
128 lines
5.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-10674",
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"assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
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"state": "PUBLISHED",
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"assignerShortName": "zephyr",
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"dateReserved": "2026-06-02T15:26:03.742Z",
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"datePublished": "2026-07-21T21:30:53.643Z",
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"dateUpdated": "2026-10-15T22:10:16.575Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
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"defaultStatus": "unaffected",
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"packageName": "zephyr",
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"product": "zephyr",
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"programFiles": [
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"drivers/serial/uart_mcux_lpuart.c"
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],
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"vendor": "zephyrproject",
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"versions": [
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{
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"lessThan": "4.3.1",
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"status": "affected",
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"version": "3.7.0",
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"versionType": "semver"
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},
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{
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"lessThan": "4.4.2",
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"status": "affected",
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"version": "4.4.0",
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"versionType": "semver"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "The NXP LPUART serial driver (drivers/serial/uart_mcux_lpuart.c), when CONFIG_UART_USE_RUNTIME_CONFIGURE is enabled, called LPUART_Deinit() at the start of mcux_lpuart_configure(), which disables the LPUART peripheral clocks. The requested configuration is validated only afterwards (in mcux_lpuart_configure_basic), and unsupported parity/data-bit/stop-bit/flow-control values return -ENOTSUP before the clock is re-enabled.\n\nAs a result, a uart_configure() request with an unsupported configuration left the LPUART in a clock-disabled state; any subsequent access to LPUART registers (poll_out/poll_in, interrupt handling, or a later reconfigure) faults on the gated peripheral and escalates to a hard fault, crashing the system.\n\nuart_configure() is a Zephyr syscall whose verifier (z_vrfy_uart_configure) only checks that cfg is readable user memory and forwards the caller-supplied configuration unchanged, so an unprivileged userspace thread with access to an LPUART device can deterministically trigger the fault, a persistent system-wide denial of service.\n\nIntroduced in v2.5.0 and present in all subsequent releases until this fix, which removes the LPUART_Deinit() call and instead only disables the transmitter/receiver, leaving the clock running."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-617",
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"description": "dos",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"references": [
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{
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"name": "Fix commit",
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"tags": [
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"patch"
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],
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"url": "https://github.com/zephyrproject-rtos/zephyr/commit/f56935c46fdf6559a20ad8484b29896ecac5808f"
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},
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{
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"name": "GHSA-mw68-r353-m3vf",
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"url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-mw68-r353-m3vf"
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}
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],
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"title": "DoS (hard fault) in NXP LPUART driver: unsupported runtime UART config leaves clocks disabled",
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"x_generator": {
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"engine": "cvelib 1.8.0"
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},
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"providerMetadata": {
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"orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
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"shortName": "zephyr",
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"dateUpdated": "2026-10-15T22:10:16.575Z"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-22T19:32:08.144813Z",
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"id": "CVE-2026-10674",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-22T19:37:08.367Z"
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}
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}
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]
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}
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} |