CVE-2026-37532 Memory corruption in n/a
A heap buffer over-read in the isotp-c library allows attackers to read out-of-bounds memory or cause crashes via crafted CAN frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-37532?
CVE-2026-37532 is a high-severity memory corruption vulnerability in n/a, published on 1 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-126
Which versions are affected by CVE-2026-37532?
It affects 1 product.
Products include Linuxfoundation Automotive Grade Linux.
How do I fix CVE-2026-37532?
No fix has been published for CVE-2026-37532 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-37532 being exploited?
There is no known exploitation of CVE-2026-37532 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-h5cx-4fh7-xq44.