CVE-2020-11258
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 lack of validation of pointer arguments passed to Trustzone BSP in 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 confidenceThis vulnerability in Snapdragon Wired Infrastructure and Networking devices involves the Trustzone BSP (Board Support Package) failing to validate pointer arguments, allowing untrusted callers to pass invalid pointers that lead to memory corruption. This could enable an authenticated attacker to execute arbitrary code within the trusted execution environment or cause 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
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 chipset modelAccess the device administrative interface or execute 'cat /proc/cpuinfo' or 'lspci' (depending on device type) to identify the exact chipset modelAffected if The chipset is one of: Ar7420, Ar9580, Csr8811, Ipq4018, Ipq4019, Ipq4028, Ipq4029, or Qca10901
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Confirm firmware versionCheck the device firmware version through its management interface, boot logs, or command such as 'cat /proc/version' or 'ip addr show'Affected if The device runs any firmware version on the affected Qualcomm chipset models listed above (all versions are affected)
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Verify Trustzone/TEE is enabledCheck if the device has Trustzone enabled by examining '/sys/kernel/debug/tee' directory, or checking for 'optee' or 'trustzone' processes via 'ps' command, or reviewing boot parameters for 'tee' referencesAffected if Trustzone is active and the device uses the vulnerable Trustzone BSP component for pointer handling
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Check for untrusted interface accessReview device access controls, API endpoints, and debug interfaces to determine if unauthenticated or low-privilege users can invoke BSP functions or call into Trustzone servicesAffected if Untrusted callers can reach the BSP functions that lack pointer validation in the Trustzone environment
If your device uses any of the listed Qualcomm chipsets (Ar7420, Ar9580, Csr8811, Ipq4018, Ipq4019, Ipq4028, Ipq4029, Qca10901) with Trustzone enabled and has accessible interfaces to the BSP, you are affected by this 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 vendor-provided firmware updates for affected Snapdragon Wired Infrastructure and Networking products. Until patched, restrict access to trusted application interfaces that invoke the vulnerable BSP functions.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-11258 — 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-2020-11258 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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