dbcve.org
P7 FirmwareOperating system · Huawei

CVE-2015-7740

MEDIUM · 5.5 CVSS v3.0 Published 2017-04-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Huawei P7 before P7-L00C17B851, P7-L05C00B851, and P7-L09C92B851 and P8 ALE-UL00 before ALE-UL00B211 allows local users to cause a denial of service (OS crash) via vectors involving an application that passes crafted input to the GPU driver.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Local privilege escalation vulnerability in Huawei P7 and P8 ALE-UL00 devices allows a malicious application to send crafted input to the GPU driver, causing the OS to crash. The vulnerability exists because the GPU driver does not properly validate input from applications before processing it.

MitigationUpdate affected Huawei P7 devices to firmware versions P7-L00C17B851, P7-L05C00B851, or P7-L09C92B851, and P8 ALE-UL00 to version ALE-UL00B211 or later to receive the patched GPU driver.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
P7 FirmwareOperating system
Affected:all versions
P8 Ale Ul00 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Go to Settings > About Phone > Model Number on the Huawei device and confirm it is either P7 or P8 ALE-UL00
    Affected if Device model is Huawei P7 or P8 ALE-UL00
  2. Check firmware version
    Go to Settings > About Phone > Build Number or Settings > About Device to view the installed firmware version
    Affected if Firmware version is below the patched versions (P7-L00C17B851, P7-L05C00B851, P7-L09C92B851 for P7; or below ALE-UL00B211 for P8 ALE-UL00)
  3. Verify GPU driver input validation status
    This vulnerability exists in the GPU driver itself and cannot be directly verified without security tooling; the primary detection is through model and firmware version checks above
    Affected if Device is an affected model with firmware versions prior to the patched releases

If the device is a Huawei P7 or P8 ALE-UL00 running firmware versions earlier than the patched releases, the environment is affected by this privilege escalation vulnerability in the GPU driver.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update affected Huawei P7 devices to firmware versions P7-L00C17B851, P7-L05C00B851, or P7-L09C92B851, and P8 ALE-UL00 to version ALE-UL00B211 or later to receive the patched GPU driver.

Fix this in P7 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2015-7740 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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