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AndroidOperating system · Google

CVE-2017-11059

HIGH · 7.8 CVSS v3.0 Published 2017-10-10
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
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
In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, setting the HMAC key by different threads during SHA operations may potentially lead to a buffer overflow.

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 · high confidence

A race condition vulnerability in the Linux kernel's HMAC-SHA implementation on Android devices allows concurrent HMAC key setting from multiple threads, potentially causing a buffer overflow due to improper synchronization.

MitigationApply the CAF kernel patch for this vulnerability and update to an Android security patch level that includes the fix. No user-facing workarounds available; this requires vendor/system-level updates.

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
AndroidOperating system
Affected:= 8.0

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
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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. Check Android version
    Run 'getprop ro.build.version.release' or check Settings > About Phone > Android version
    Affected if The version is exactly 8.0 (Oreo)
  2. Check kernel version and build date
    Run 'uname -a' or check /proc/version to see the kernel build information
    Affected if Kernel is the stock Android 8.0 kernel without the CAF security patch applied
  3. Verify crypto module availability
    Check if the kernel has crypto subsystem support: 'cat /proc/crypto' and look for 'hmac(sha)' or 'sha1' entries in the list
    Affected if The HMAC-SHA crypto module is loaded and usable on the device
  4. Check security patch level
    Run 'getprop ro.build.version.security_patch' to see the installed security patch date
    Affected if The security patch level is older than the fix release date for this CVE (typically included in August 2017 or later patch levels)

A device is affected if it runs Android 8.0 with a kernel that has not received the CAF patch for this race condition, as indicated by an outdated security patch level.

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

Apply the CAF kernel patch for this vulnerability and update to an Android security patch level that includes the fix. No user-facing workarounds available; this requires vendor/system-level updates.

Fix this in Android Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing12.0 h
  • Review / QA6.0 h
30.0 hours of engineering $5,120
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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-2017-11059 in production — separate from our analysis above.

No notes yet

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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
  • No spam, self-promotion, credentials, or personal data