CVE-2022-40514
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 due to buffer copy without checking the size of input in WLAN Firmware while processing CCKM IE in reassoc response frame.
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 confidenceBuffer overflow vulnerability in WLAN firmware where processing a CCKM IE (Cisco Centralized Key Management) in a reassoc response frame copies data to a buffer without validating the input size, leading to memory corruption.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 Qualcomm wireless chipset modelRun commands such as 'lspci -v' for PCIe无线 adapters, 'iw list' for Linux wireless drivers, or check device documentation to identify the specific Qualcomm chip (Aqt1000, Ar8031, Ar8035, Ar9380, Csr8811, Csra6620, Csra6640, or Csrb31024)Affected if The device uses any of the eight affected Qualcomm chips listed in the CVE
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Determine firmware version of the wireless chipsetUse vendor-specific tools or check /proc/ath10k_version, /sys/firmware/efi/efivars (for ath10k), or run 'ethtool -i wlan0' to retrieve firmware version details; consult device management interface for embedded devicesAffected if The installed firmware version matches any of the affected products (Aqt1000, Ar8031, Ar8035, Ar9380, Csr8811, Csra6620, Csra6640, Csrb31024) - all versions are affected
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Verify if CCKM is enabledCheck wireless controller or AP configuration for Centralized Key Management settings; run 'iw dev wlan0 info' and review security settings, or access the wireless infrastructure management console to inspect 802.11r/CCKM settingsAffected if CCKM (Cisco Centralized Key Management) is configured or enabled on the wireless client or AP
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Confirm device processes reassoc response framesMonitor wireless traffic with tcpdump -i wlan0 -w capture.pcap 'wlan.fc.type==0 and wlan.fc.subtype==1' or check AP logs for reassoc response processing; verify the device acts as a wireless client connecting to WPA2-Enterprise networksAffected if The device is a wireless client that processes reassoc response frames from an AP, particularly in enterprise WPA2 environments
A user is affected if their environment contains any of the eight listed Qualcomm wireless chipsets (Aqt1000, Ar8031, Ar8035, Ar9380, Csr8811, Csra6620, Csra6640, Csrb31024) with CCKM enabled and the ability to process reassoc response frames, since all firmware versions of these chips are vulnerable.
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 dataApply vendor-supplied firmware update addressing the buffer overflow in WLAN firmware; until patched, restrict wireless network access to trusted devices to reduce exposure.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40514 — 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-2022-40514 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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- 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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