Device reboot via unmapped DMA request
Published Mar 5, 2020 · Updated Aug 5, 2024
Use of an uninitialized resource in Qualcomm Snapdragon USB drivers allows physically proximate attackers to reboot affected devices. The USB gadget core driver unmaps a DMA buffer for a request that was never mapped, then accesses an uninitialized variable and panics the kernel. Exploitation requires a physical USB connection to a device using an affected chipset; the demonstrated consequence is a device restart.
Summary
What happened
Use of an uninitialized resource in Qualcomm Snapdragon USB drivers allows physically proximate attackers to reboot affected devices. The USB gadget core driver unmaps a DMA buffer for a request that was never mapped, then accesses an uninitialized variable and panics the kernel. Exploitation requires a physical USB connection to a device using an affected chipset; the demonstrated consequence is a device restart.
The record
- CVE
- CVE-2019-14079
- Published
- Mar 5, 2020
- Updated
- Aug 5, 2024
- Vendor
- Qualcomm
- Product
- Snapdragon
- Classifications
- CWE-908
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 5, 2020CVE publishedPublication date reported by the CVE source.
- Aug 5, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=APQ8009, APQ8053, MDM9607, MDM9640, MSM8909W, MSM8953, QCA6574AU, QCS605, SDA845, SDM429, SDM429W, SDM439, SDM450, SDM632, SDM670, SDM710, SDM845, SDX24, SM8150, SXR1130
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- USB device fuzzing on Android proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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