CVE-2022-40529
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 improper access control in kernel while processing a mapping request from root process.
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 kernel-level vulnerability involving improper access control when processing memory mapping requests from a root process, leading to memory corruption. The issue stems from insufficient validation during mapping operations that should be restricted even for privileged processes.
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 presence of affected Qualcomm firmware componentsReview system firmware, boot logs, or device inventory to determine if any of the following firmware components are installed: Aqt1000, Ar8031, Ar8035, C V2x 9150, Csra6620, Csra6640, Wcn3991, or Wcn3998. Use commands such as 'dmesg', 'cat /proc/firmware', or vendor-specific tools that display loaded firmware modules.Affected if Any of the listed firmware components (Aqt1000, Ar8031, Ar8035, C V2x 9150, Csra6620, Csra6640, Wcn3991, Wcn3998) are present in the system
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Verify firmware version identificationQuery the specific firmware module for its version string using appropriate tools (e.g., 'cat /sys/class/firmware/.../version', vendor diagnostic tools, or firmware dumping utilities). Compare the identified firmware name and version against the affected product list.Affected if The identified firmware matches any of: Aqt1000 (any version), Ar8031 (any version), Ar8035 (any version), C V2x 9150 (any version), Csra6620 (any version), Csra6640 (any version), Wcn3991 (any version), Wcn3998 (any version)
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Confirm memory mapping functionality is in useExamine system logs, kernel messages, or runtime diagnostics for memory mapping operations involving the affected firmware components. Look for mmap, ioremap, or similar memory mapping function calls from the firmware driver.Affected if Memory mapping operations are being performed by the affected firmware drivers or modules
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Check for root-level process access to firmware memory regionsReview process logs, system audit trails, or security monitoring tools to identify any root-level processes that have accessed memory regions controlled by the affected firmware components.Affected if Root or privileged processes have accessed memory mapping interfaces provided by the affected firmware
The environment is affected if any of the listed Qualcomm firmware components (Aqt1000, Ar8031, Ar8035, C V2x 9150, Csra6620, Csra6640, Wcn3991, Wcn3998) are present, as all versions of these products contain the vulnerability.
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 the vendor-provided kernel security patch addressing the access control weakness in memory mapping handlers. Verify that memory mapping operations now properly validate permissions before allowing access.
- Consultation8.0 h
- Implementation16.0 h
- Testing24.0 h
- Review / QA12.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $16,384.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40529 — 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-2022-40529 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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