Vulnerability Description
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, &data[1], payload_length) reads up to 8 bytes past the end of the data buffer.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Automotive Grade Linux | <= 17.1.12 |
Related Weaknesses (CWE)
References
- https://gerrit.automotivelinux.org/gerrit/apps/agl-service-can-low-levelBroken Link
- https://gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643Third Party Advisory
FAQ
What is CVE-2026-37532?
CVE-2026-37532 is a vulnerability with a CVSS score of 7.1 (HIGH). 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...
How severe is CVE-2026-37532?
CVE-2026-37532 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37532?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Automotive Grade Linux.