CVE-2026-97912
Received Received - Intake

Ethosu SRAM Mapping Failure Leads to Job Access

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: accel: ethosu: Ensure SRAM size is 0 on mapping failure On a mapping failure of the SRAM, the SRAM size is left as non-zero. The probe will succeed as the error return is not checked since having SRAM is not a hard requirement. The non-zero size allows jobs to access SRAM which is left pointing to physical base address 0x0.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-97912
EUVD
EUVD-2026-86766

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
accel ethosu *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves improper handling of SRAM mapping failures in the Ethos-U NPU accelerator driver. When SRAM mapping fails, the size is not reset to zero, allowing jobs to access SRAM at physical address 0x0, which could lead to unintended memory access or crashes.

Detection Guidance

This vulnerability is specific to the Linux kernel's ethosu accelerator driver. Detection requires checking kernel logs for SRAM mapping failures or examining the ethosu driver's state. No standard network commands apply. Check dmesg for errors like 'ethosu: SRAM mapping failed' or verify SRAM size in /sys/kernel/debug/ethosu.

Impact Analysis

This vulnerability may cause system instability, crashes, or potential unauthorized memory access if exploited. Systems using the Ethos-U NPU accelerator could experience unexpected behavior or security risks due to improper SRAM handling.

Mitigation Strategies

Update the Linux kernel to a patched version where this issue is resolved. If immediate patching is not possible, disable the ethosu accelerator driver by blacklisting it or removing the module to prevent SRAM access.

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