128 lines
6.2 KiB
JSON
128 lines
6.2 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-2026-10660",
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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": "2026-06-02T15:24:37.969Z",
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"datePublished": "2026-07-11T17:00:13.644Z",
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"dateUpdated": "2026-10-15T22:10:10.770Z"
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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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"subsys/bluetooth/audio/bap_broadcast_assistant.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": "3.6.0",
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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 Bluetooth BAP Broadcast Assistant GATT client in subsys/bluetooth/audio/bap_broadcast_assistant.c reassembled remote Broadcast Receive State data into a single file-static net_buf_simple (att_buf, BT_ATT_MAX_ATTRIBUTE_LEN = 512 bytes) shared by all connection instances, while the BUSY flag, long-read handle, and reset/offset state were per-connection.\n\nWhen the device acts as a Broadcast Assistant connected to multiple Scan Delegator peripherals, notification and long-read callbacks from different connections interleave on the shared buffer: the append in notify_handler (net_buf_simple_add_mem at the not-busy branch) performs no tailroom check, so receive-state notifications from two or more delegators accumulate on the same 512-byte buffer and, with a sufficiently large configured ATT MTU (BT_L2CAP_TX_MTU up to 2000) and two-to-three concurrent connections, write past the buffer into adjacent .bss (net_buf_simple_add only asserts in debug builds).\n\nEven below the overflow threshold, one connection's net_buf_simple_reset zeroes the shared length while another connection's reassembly and GATT read offset are in flight, mixing one peer's data into another's parse. A malicious or compromised Scan Delegator (or two colluding peers) over BLE can trigger this, causing out-of-bounds writes (memory corruption / denial of service) and cross-connection data corruption.\n\nThe fix moves the buffer into the per-connection instance struct so each connection reassembles into its own buffer. Affects Zephyr releases shipping the Broadcast Assistant with the shared buffer, including v4.4.0 and earlier."
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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": 6.4,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/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-787",
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"description": "memory-safety",
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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/0cd61589ff820b6a585c73cb36f1e14b043a2795"
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},
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{
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"name": "GHSA-73c7-3rh7-v5p9",
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"url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-73c7-3rh7-v5p9"
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}
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],
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"title": "Shared reassembly buffer in Bluetooth BAP Broadcast Assistant enables cross-connection memory corruption",
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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": "2026-10-15T22:10:10.770Z"
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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": "2026-07-13T15:44:09.257224Z",
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"id": "CVE-2026-10660",
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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": "2026-07-13T15:44:27.208Z"
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}
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}
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]
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}
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} |