CVE intelligence and bounded remediation

CVE-2016-8763 — Huawei P9 Firmware security vulnerability

High CVSS 9.3

The TrustZone driver in Huawei P9 phones with software Versions earlier than EVA-AL10C00B352 and P9 Lite with software VNS-L21C185B130 and earlier versions and P8 Lite with software ALE-L02C636B150 and earlier versions has an improper resource release vulnerability, which allows attackers to cause a system restart or privilege elevation.

Severity
High
CVSS
9.3 (2.0)
Published
2017-04-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-664

Affected products

  • huawei / p9_firmware
  • huawei / p9_lite_firmware
  • huawei / p8_lite_firmware

Matched remediation archetype

Race condition, TOCTOU, and lifecycle synchronization

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map concurrent actors, shared state, lock boundaries, signals, callbacks, retries, and check-then-use sequences in the affected path.
  • Determine whether untrusted users can influence timing, object names, filesystem state, or repeated state transitions.
  • Identify clustered and multi-process behavior that repository-local tests may not represent.

Remediate safely

  • Make the sensitive state transition atomic or protect it with a consistently ordered synchronization primitive.
  • Perform authorization and invariant checks on the same authoritative object and transaction used for the operation.
  • Use unique private resources, safe ownership transfer, and idempotent operations; add deterministic concurrency regression tests.

Authoritative sources

Complete CVE record and remediation plan

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