Buffer Overflow in Zephyr Crypto Driver Affects ATAES132A Responses

CVE-2026-0849

What is CVE-2026-0849?

The Zephyr crypto driver is vulnerable to a buffer overflow due to malformed ATAES132A responses that feature an oversized length field. This flaw allows an attacker, potentially either through a compromised device or via the bus, to manipulate the stack buffer, leading to corruption of kernel memory. Exploiting this vulnerability could enable an attacker to hijack the execution flow of the system.

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