CVE-2021-30282
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 · uneditedPossible out of bound write in RAM partition table due to improper validation on number of partitions provided in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking
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 buffer overflow vulnerability exists in the RAM partition table handling of Qualcomm Snapdragon chipsets. The issue stems from improper validation of the number of partitions provided, allowing an attacker to trigger an out-of-bounds write operation that could lead to memory corruption, potential code execution, or 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 devices with affected Qualcomm chipsetsReview hardware inventory, device datasheets, or network equipment documentation to determine if any devices use the following chipsets: Ar8031, Ar8035, Csr8811, Csra6620, Csra6640, Csrb31024, Fsm10055, or Fsm10056. Check chip markings on hardware or consult OEM hardware specifications.Affected if Any device is found using one of the listed Qualcomm chipsets or firmware modules
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Locate firmware version informationAccess the device firmware through bootloader interfaces, debug ports, or firmware extraction from device memory. For network devices, check via serial console, JTAG, or manufacturer-specific diagnostic tools. Extract and parse the firmware image to identify the chipset-specific firmware version string.Affected if Firmware version cannot be determined or all versions are present (since all versions are affected)
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Confirm RAM partition table feature is in useExamine device configuration or firmware settings to determine if the RAM partition table handling functionality is active. This may be documented in chipset reference manuals or device schematics. Check if the device boots from or interacts with partitioned memory regions.Affected if The device utilizes RAM partition table handling functionality, which is the attack surface for this vulnerability
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Check for vendor advisories or patch statusContact the device original equipment manufacturer (OEM) to confirm whether patched firmware is available for the specific device model and chipset combination. Review Qualcomm security advisories for CVE-2021-30282 and associated patch dates.Affected if No vendor patch has been applied or no patch is available for the affected device
A defender is affected if their environment contains devices utilizing any of the listed Qualcomm chipset firmware (Ar8031, Ar8035, Csr8811, Csra6620, Csra6640, Csrb31024, Fsm10055, Fsm10056) and the RAM partition table feature is active, since all firmware versions of these chipsets 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 updates from device manufacturers that include the patch for this vulnerability. Contact your device OEM or chipset vendor for availability of patched firmware versions.
- Consultation8.0 h
- Testing16.0 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 $9,856.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-30282 — 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-2021-30282 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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