CVE-2026-12232
- Source
- https://cve.org/CVERecord?id=CVE-2026-12232
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12232.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-12232
- Aliases
-
- GHSA-3557-j848-pv24
- Published
- 2026-08-12T03:34:14Z
- Modified
- 2026-08-28T14:32:58Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L CVSS Calculator
- Summary
- Out-of-bounds read via unvalidated stream_id in Intel ALH DAI get_properties
- Details
-
The Intel ALH digital-audio-interface driver function dai_alh_get_properties() in drivers/dai/intel/alh/alh.c used a caller-supplied int stream_id with no range validation. The value indexes the fixed-size static const uint8_t alh_handshake_map[64] array and scales a FIFO register address, so an out-of-range stream_id produces an out-of-bounds read of one byte at an attacker-chosen signed offset from the array. That byte is written into prop->dma_hs_id and the resulting struct dai_properties is copied back to the caller, leaking it.
dai_get_properties_copy() is a Zephyr __syscall, and its verifier z_vrfy_dai_get_properties_copy() (drivers/dai/dai_handlers.c) validates only the device-object permission and the destination buffer, not stream_id. A user-mode thread that has been granted access to the ALH DAI device object can therefore call the syscall with an arbitrary stream_id, crossing the userspace/kernel sandbox boundary.
The impact is a one-byte-per-call arbitrary-offset kernel information disclosure (and leakage of a computed kernel address via fifo_address); a stream_id that resolves to an unmapped page faults in kernel context, giving a local denial of service. Exploitation requires CONFIG_USERSPACE and device access, making this a local, moderate-severity issue. The fix rejects negative and too-large stream_id values up front and returns NULL, which the copy wrapper maps to -ENOENT.
- Database specific
{ "cna_assigner": "zephyr", "cwe_ids": [ "CWE-125" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12232.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/2026/12xxx/CVE-2026-12232.json
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3557-j848-pv24
- https://nvd.nist.gov/vuln/detail/CVE-2026-12232
- https://github.com/zephyrproject-rtos/zephyr/commit/b470bfce689809621cc5cd8c04a4eca93795827a
- 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-2026-12232.json"
vanir_signatures
[
{
"deprecated": false,
"digest": {
"function_hash": "132250286950715230206000150583657090389",
"length": 629
},
"id": "CVE-2026-12232-4f0fe999",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/b470bfce689809621cc5cd8c04a4eca93795827a",
"target": {
"file": "drivers/dai/intel/alh/alh.c",
"function": "dai_alh_get_properties"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
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],
"threshold": 0.9
},
"id": "CVE-2026-12232-723dfd32",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/b470bfce689809621cc5cd8c04a4eca93795827a",
"target": {
"file": "drivers/dai/intel/alh/alh.c"
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}
]
vanir_signatures_modified
"2026-08-28T14:32:58Z"