GHSA-H5CX-4FH7-XQ44
Vulnerability from github – Published: 2026-05-01 18:31 – Updated: 2026-05-01 18:31AGL agl-service-can-low-level thru 17.1.12 contains a heap buffer over-read in the isotp-c library. In isotp_continue_receive (receive.c:87-89), the payload_length for a Single Frame is extracted from a 4-bit nibble in the CAN frame data, yielding values 0-15. However, a standard CAN frame is only 8 bytes, with payload starting at data[1] (7 bytes available). When payload_length exceeds the available data (e.g., nibble=15 but only 7 payload bytes exist), memcpy(message.payload, &data[1], payload_length) reads up to 8 bytes past the end of the data buffer.
{
"affected": [],
"aliases": [
"CVE-2026-37532"
],
"database_specific": {
"cwe_ids": [
"CWE-126"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-01T17:16:22Z",
"severity": "HIGH"
},
"details": "AGL agl-service-can-low-level thru 17.1.12 contains a heap buffer over-read in the isotp-c library. In isotp_continue_receive (receive.c:87-89), the payload_length for a Single Frame is extracted from a 4-bit nibble in the CAN frame data, yielding values 0-15. However, a standard CAN frame is only 8 bytes, with payload starting at data[1] (7 bytes available). When payload_length exceeds the available data (e.g., nibble=15 but only 7 payload bytes exist), memcpy(message.payload, \u0026data[1], payload_length) reads up to 8 bytes past the end of the data buffer.",
"id": "GHSA-h5cx-4fh7-xq44",
"modified": "2026-05-01T18:31:24Z",
"published": "2026-05-01T18:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-37532"
},
{
"type": "WEB",
"url": "https://gerrit.automotivelinux.org/gerrit/apps/agl-service-can-low-level"
},
{
"type": "WEB",
"url": "https://gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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