Buffer overflow in Linuxfoundation Automotive Grade Linux
CVE-2026-37530
AGL agl-service-can-low-level thru 17.1.12 contains a stack buffer overflow in the uds-c library. The send_diagnostic_request function in uds.c allocates a 6-byte stack buffer (MAX_DIAGNOSTIC_PAYLOAD_SIZE=6) but copies up to 7 bytes (MAX_UDS_REQUEST_PAYLOAD_LENGTH=7) via memcpy at an offset of 1+pid_length (2-3 bytes), resulting in 1-4 bytes of controlled stack overflow. The payload_length field (uint8_t) has no bounds check against the destination buffer. On 32-bit ARM automotive ECUs without stack canaries, this can lead to return address overwrite and RCE.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
Weakness classification (CWE)
References
- gerrit.automotivelinux.org/gerrit/apps/agl-service-can-low-level (Broken Link)
- gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-37530?
- CVE-2026-37530 is a high-severity vulnerability in Linuxfoundation Automotive Grade Linux, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-05-01.
- How severe is CVE-2026-37530?
- High severity. CVSS v3 base score is 7.5 out of 10.