# CVE-2016-8763: Use after free in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions

> Attackers can exploit a TrustZone driver flaw to cause system restarts or elevate privileges on affected Huawei smartphones.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-7868-9j9h-fr97

## What is CVE-2016-8763?

CVE-2016-8763 is a high-severity use after free vulnerability in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions, published on 2 Apr 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-664 (Improper Control of a Resource Through its Lifetime)

## Which versions are affected by CVE-2016-8763?

It affects 3 products.


Products: Huawei P8 Lite Firmware, Huawei P9 Firmware, Huawei P9 Lite Firmware.

## How do I fix CVE-2016-8763?

No fix has been published for CVE-2016-8763 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-8763 being exploited?

There is no known exploitation of CVE-2016-8763 in the wild and no public exploit code.

## Other vulnerabilities in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions

- [CVE-2016-8764](https://insights.sbomify.com/CVE-2016-8764/): Memory corruption in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions (medium 6.4)
- [CVE-2016-8762](https://insights.sbomify.com/CVE-2016-8762/): Denial of service in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-8763 and fix it if it is affected.

What it is: CVE-2016-8763 is a high-severity use after free vulnerability in P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions, published on 2 Apr 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2016-8763 in the wild and no public exploit code.

Affected product: P9,P9 Lite,P8 Lite Versions earlier than EVA-AL10C00B352,VNS-L21C185B130 and earlier versions,ALE-L02C636B150 and earlier versions. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2016-8763/ (Markdown: https://insights.sbomify.com/CVE-2016-8763/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8763
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8763
- OSV: https://osv.dev/vulnerability/CVE-2016-8763

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-8763/
Summaries are generated and may contain mistakes; the official description above is the record.