145 lines
7.2 KiB
JSON
145 lines
7.2 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-15461",
|
|
"assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "zephyr",
|
|
"dateReserved": "2026-07-10T20:12:01.873Z",
|
|
"datePublished": "2026-09-10T14:34:21.914Z",
|
|
"dateUpdated": "2026-09-10T16:58:19.058Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
|
|
"shortName": "zephyr",
|
|
"dateUpdated": "2026-09-10T14:34:21.914Z"
|
|
},
|
|
"title": "Type confusion in Zephyr HL78xx GNSS NMEA driver causes wild-pointer write from GNSS input",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "The Sierra Wireless HL78xx modem GNSS driver (drivers/modem/hl78xx/, later drivers/modem/vendor_standalone/hl78xx/) embeds a generic struct gnss_nmea0183_match_data match_data inside struct hl78xx_gnss_data. The generic NMEA0183 match helper (drivers/gnss/gnss_nmea0183_match.c) requires that context to be the first member because its callbacks cast user_data directly to struct gnss_nmea0183_match_data . In the affected releases match_data was the second member (after const struct device dev), so it sat at a non-zero offset while gnss_nmea0183_match_init() initialized it at the correct address. The registered NMEA handlers instead pass the whole device data object (data->devices.gnss->data, offset 0), producing an offset-shifted type confusion between where state is initialized and where the parse callbacks read and write it.\n\nWhen NMEA sentences from the GNSS receiver are parsed, the GGA/RMC callbacks write parsed fix data into the wrong location within the struct, and the GSV callback (gnss_nmea0183_match_gsv_callback, active under CONFIG_GNSS_SATELLITES) reads its satellites pointer and bound from the wrong offsets — non-pointer bytes of struct hl78xx_gnss_data — and then writes parsed struct gnss_satellite entries through that bogus pointer. This is a write through an uninitialized/wild pointer with a garbage bound.\n\nThe NMEA handlers are registered by default (CONFIG_HL78XX_GNSS_SOURCE_NMEA is the default GNSS source) on devices using the HL78xx GNSS. The driver runs in kernel context and the NMEA data originates from the GNSS radio front-end, so a party able to influence the GNSS signal (for example GNSS/GPS spoofing at radio proximity) can drive the kernel-side parser into the faulty write. The most likely impact is a crash (denial of service) because the bogus pointer resolves to a fixed near-NULL value, with adjacent-memory corruption possible on MMU-less targets. Confidentiality is not affected. Exploitation requires the satellites feature to be enabled and active, so attack complexity is high."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "zephyrproject",
|
|
"product": "zephyr",
|
|
"collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
|
|
"packageName": "zephyr",
|
|
"defaultStatus": "unaffected",
|
|
"programFiles": [
|
|
"drivers/modem/vendor_standalone/hl78xx/hl78xx_gnss.h"
|
|
],
|
|
"programRoutines": [
|
|
{
|
|
"name": "hl78xx_get_gnss_data"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea0183_match_gga"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea0183_match_gsa"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea0183_match_gst"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea0183_match_gsv"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea0183_match_rmc"
|
|
},
|
|
{
|
|
"name": "hl78xx_gnss_nmea_match_epu"
|
|
}
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.4.0",
|
|
"status": "affected",
|
|
"versionType": "semver",
|
|
"lessThan": "4.4.2"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/zephyrproject-rtos/zephyr/commit/8a2465784e8909aa3835559381a60c00cc2218a1",
|
|
"name": "Fix commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-vvjg-6rg4-7235",
|
|
"name": "GHSA-vvjg-6rg4-7235"
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"baseScore": 5.3,
|
|
"baseSeverity": "MEDIUM"
|
|
}
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"description": "memory-safety",
|
|
"cweId": "CWE-843",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "cvelib 1.8.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-09-10T16:57:25.442788Z",
|
|
"id": "CVE-2026-15461",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-09-10T16:58:19.058Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |