CVE-2022-40502
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 · uneditedTransient DOS due to improper input validation in WLAN Host.
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 confidenceThis is a Denial of Service vulnerability in the WLAN Host component caused by improper input validation. The issue is transient in nature, meaning the service disruption may be temporary or occur under specific conditions.
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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device chipset or modelCheck the device documentation, hardware specifications, or run commands like 'cat /proc/cpuinfo', 'lspci', 'lsusb', or check boot logs to identify the specific Qualcomm chipset (Csr8811, Ipq5010, Ipq5018, Ipq5028, Ipq6000, Ipq6010, Ipq6018, or Ipq6028) in useAffected if The device uses any of the listed Qualcomm chipsets (Csr8811, Ipq5010, Ipq5018, Ipq5028, Ipq6000, Ipq6010, Ipq6018, or Ipq6028)
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Verify WLAN Host component is activeCheck if WLAN functionality is enabled on the device by examining network interfaces (ip link show, iwconfig), wireless daemon status (hostapd, wpa_supplicant), or WLAN-related services/processesAffected if WLAN interfaces or wireless host services are running on the affected chipset
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Check for wireless packet handlingMonitor network traffic or examine system logs for wireless interface activity using commands like 'tcpdump -i wlan0' or 'logread' to confirm the WLAN host component is processing wireless packetsAffected if The device is actively processing wireless traffic through the WLAN Host component
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Review firmware version if accessibleIf firmware version is exposed via /proc/version, boot logs, or device management interface, compare it against the affected ranges. Note: All versions of listed chipsets are affected.Affected if Any firmware version is present on the listed Qualcomm chipsets (all versions are affected)
The environment is affected if the device uses any of the listed Qualcomm chipsets (Csr8811, Ipq5010, Ipq5018, Ipq5028, Ipq6000, Ipq6010, Ipq6018, Ipq6028) with WLAN functionality enabled, as all firmware versions of these chipsets are vulnerable to this input validation flaw in the WLAN Host component.
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 input validation and bounds checking on all data inputs to the WLAN Host component to prevent malformed packets or unexpected input from causing service disruption.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,888.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40502 — 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-2022-40502 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
- No spam, self-promotion, credentials, or personal data