Attributed metadata history
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intelligence_src_350d40f2cc69277bca
observed · 2026-10-12 08:34:02 UTC
available
Fingerprint: fe0fdc07a129ff203534388ab215df24d870069207d85287923a2a35a12b5578
intelligence_src_350d40f2cc69277bca
observed · 2026-10-12 08:34:02 UTC
Summary The NPU device’s kernel driver implements a set of ioctl handlers one of which uses unsanitized user data as an offset to retrieve a kernel structure. Fields of the structure are written with user provided values. A malicious actor can use this vulnerability to overwrite kernel memory with controlled data. The mmap handler is exposed through the /dev/davinci0 character device. Due to the applied selinux policy, access to this device is restricted to the hiaiserver system process. Because of these limitations a practical attack would need to target the hiaiserver first. The /dev/davinci0 device exposes a series of ioctl handlers, one of which is devdrv_ioctl_load_stream_buff.
Fingerprint: f0af16b1d6dac4d73ecf565c830996a276dfc8957a0b98905caa3b02a7a5e953