CVE-2022-40516
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 · uneditedMemory corruption in Core due to stack-based 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 · moderate confidenceA stack-based buffer overflow in Core leads to memory corruption. This occurs when data written to a stack-allocated buffer exceeds its bounds, overwriting adjacent memory including return addresses, potentially enabling arbitrary code execution or causing denial of service.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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:3.1/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Qualcomm chip model in your deviceExamine device hardware specifications, labels, or system information to determine if the chipset matches one of the following: Aqt1000, Ar8031, Ar8035, Csr8811, Csra6620, Csra6640, Csrb31024, or Fsm10056Affected if The device uses any of these eight Qualcomm chip models - if so, all firmware versions are affected by this vulnerability
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Check firmware version if accessibleIf you can access the device firmware (via bootloader, debug interface, or firmware dump), retrieve the firmware version string for the identified Qualcomm chipAffected if Any firmware version is present on an affected chip model - all versions are vulnerable
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Verify the Core component is activeConfirm the device firmware is running and the Core component of the Qualcomm chipset is operational. This is typically the case for any functioning device using these chipsAffected if The Core component is running - the buffer overflow occurs when data is written to stack-allocated buffers in this component
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Look for symptoms of memory corruptionMonitor device logs, crash dumps, or network traffic for indicators of unexpected behavior, crashes, or memory corruption that could suggest exploitation of this buffer overflowAffected if Unexplained crashes, memory corruption indicators, or anomalous behavior are observed on a device with affected hardware
A user is affected if their device contains any of the eight listed Qualcomm chip models (Aqt1000, Ar8031, Ar8035, Csr8811, Csra6620, Csra6640, Csrb31024, Fsm10056) regardless of firmware version, since the vulnerability exists in the Core component of all such firmware versions.
Generated from the published advisory. Verify against your own configuration.
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 dataImplement proper bounds checking on all buffer operations, replace unsafe string functions (strcpy, sprintf, etc.) with secure alternatives (strncpy, snprintf), and enable compiler protections such as stack canaries. Validate all input sizes before copying into fixed-size buffers.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40516 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-40516 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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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