CVE-2019-13995
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 · uneditedu'Lack of integer overflow check for addition of fragment size and remaining size that are read from shared memory can lead to memory corruption and potential information leakage' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8009, APQ8017, APQ8053, APQ8096AU, APQ8098, Bitra, IPQ6018, IPQ8074, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9640, MDM9645, MDM9650, MDM9655, MSM8905, MSM8909, MSM8917, MSM8920, MSM8937, MSM8940, MSM8953, MSM8996, MSM8996AU, MSM8998, Nicobar, QCA8081, QCM2150, QCN7605, QCS404, QCS405, QCS605, QCS610, QM215, Rennell, SA415M, SA6155P, Saipan, SC7180, SC8180X, SDA660, SDA845, SDM429, SDM429W, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130
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 confidenceInteger overflow vulnerability in the addition of fragment size and remaining size values read from shared memory. Without proper overflow checking, the calculated total can wrap to a small value, causing buffer operations to use an undersized buffer, leading to memory corruption and potential information disclosure.
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 the Qualcomm chipset modelCheck the device hardware specifications, bootloader information, or /proc/cpuinfo on embedded devices to determine the exact Qualcomm SoC model (e.g., Apq8009, Apq8017, Apq8053, Apq8096au, Apq8098, Bitra, Ipq6018, Ipq8074)Affected if The chipset matches any of the listed affected models: Apq8009, Apq8017, Apq8053, Apq8096au, Apq8098, Bitra, Ipq6018, or Ipq8074
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Locate shared memory handling code or moduleSearch firmware binaries, kernel modules, or system libraries for functions that handle shared memory operations involving fragment size and remaining size calculations. Look for code paths that read size values from shared memory and perform addition operationsAffected if The firmware contains code that reads fragment size and remaining size values from shared memory and adds them together without overflow validation
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Check for integer overflow protection in size calculation routinesIf you have access to firmware binaries or source code, examine the arithmetic operations where fragment size and remaining size are added. Verify whether bounds checking or overflow validation exists before the addition operationAffected if The code performs (fragment_size + remaining_size) without validating that the sum does not exceed expected buffer boundaries or wrap to a small value
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Determine if shared memory feature is in useMonitor or inspect the device runtime to determine whether any components utilize the vulnerable shared memory interface that processes fragment and remaining size valuesAffected if The device actively uses shared memory functionality that processes fragment and remaining size values through the vulnerable code path
A device is affected if it uses a Qualcomm chipset from the affected list (Apq8009, Apq8017, Apq8053, Apq8096au, Apq8098, Bitra, Ipq6018, Ipq8074) and runs firmware with the vulnerable shared memory size calculation that lacks overflow checking before adding fragment and remaining size values.
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 integer overflow checks before adding fragment size and remaining size values; validate that the sum cannot exceed expected buffer boundaries. Apply bounds checking on all size values read from shared memory before performing arithmetic operations.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-13995 — 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-2019-13995 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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