CVE-2024-20019
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 · uneditedIn wlan driver, there is a possible memory leak due to improper input handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00351241; Issue ID: MSV-1173.
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 memory leak vulnerability exists in a WLAN driver due to improper input handling. Remote attackers can exploit this to cause denial of service by exhausting memory resources, requiring no privileges or user interaction.
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 data<= 2023.11.10CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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 Mediatek WLAN driver presenceCheck system for Mediatek wireless networking components - look for mediatek/wlan driver files or modules (e.g., in /lib/modules, or via 'lspci'/'lsusb' for wireless adapters)Affected if System has Mediatek wireless hardware and uses its proprietary WLAN driver stack
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Determine Mediatek Software Package versionLocate the Mediatek Software Package installation directory and check version file, or run version command provided by Mediatek software (often in /etc or /opt/mediatek)Affected if Version is 2023.11.10 or earlier, or version cannot be determined but Mediatek WLAN is present
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Verify WLAN driver module is loadedCheck if the WLAN driver module is currently active - use 'lsmod' for kernel modules or check running services related to wireless (e.g., wpa_supplicant, hostapd)Affected if Mediatek WLAN driver is loaded and actively handling wireless traffic
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Check for abnormal memory consumptionMonitor current process memory usage - use 'ps aux' or 'top' to observe memory usage of wlan/wireless processes, compare against baselineAffected if WLAN-related processes show unusually high and continuously growing memory usage without release
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Review system memory pressure indicatorsCheck system memory stats via 'free -m', 'vmstat 1', or /proc/meminfo for signs of memory exhaustionAffected if Available memory decreases steadily while WLAN driver is operational
System is affected if it runs Mediatek Software Package version 2023.11.10 or earlier with the WLAN driver enabled, and exhibits abnormal memory growth in wireless driver processes.
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 patch WCNCR00351241 to fix the memory leak in the WLAN driver. Until the patch is available, monitor system memory usage for anomalies that may indicate exploitation.
- Consultation3.0 h
- Implementation6.0 h
- Testing8.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-20019 — 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-2024-20019 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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