CVE-2025-21456

Home/CVE/Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.

CVE

Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.

HIGH · CVSS 7.8 EPSS 0.00068

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Weakness Classification

CWE-416Use After Free

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Affected Products & Versions

qualcomm ar8035 firmwareall versions
qualcomm c-v2x 9150 firmwareall versions
qualcomm fastconnect 6900 firmwareall versions
qualcomm fastconnect 7800 firmwareall versions
qualcomm qam8255p firmwareall versions
qualcomm qam8295p firmwareall versions
qualcomm qam8650p firmwareall versions
qualcomm qam8775p firmwareall versions
Show all 60 affected productsqualcomm qca6174a firmwareall versions
qualcomm qca6574au firmwareall versions
qualcomm qca6584au firmwareall versions
qualcomm qca6696 firmwareall versions
qualcomm qca6698aq firmwareall versions
qualcomm qca6797aq firmwareall versions
qualcomm qca8081 firmwareall versions
qualcomm qca8337 firmwareall versions
qualcomm qcc710 firmwareall versions
qualcomm qcn6224 firmwareall versions
qualcomm qcn6274 firmwareall versions
qualcomm qcs410 firmwareall versions
qualcomm qcs610 firmwareall versions
qualcomm qfw7114 firmwareall versions
qualcomm qfw7124 firmwareall versions
qualcomm video collaboration vc1 platform firmwareall versions
qualcomm video collaboration vc3 platform firmwareall versions
qualcomm sa6145p firmwareall versions
qualcomm sa6150p firmwareall versions
qualcomm sa6155p firmwareall versions
qualcomm sa7255p firmwareall versions
qualcomm sa7775p firmwareall versions
qualcomm sa8145p firmwareall versions
qualcomm sa8150p firmwareall versions
qualcomm sa8155p firmwareall versions
qualcomm sa8195p firmwareall versions
qualcomm sa8255p firmwareall versions
qualcomm sa8295p firmwareall versions
qualcomm sa8530p firmwareall versions
qualcomm sa8540p firmwareall versions
qualcomm sa8620p firmwareall versions
qualcomm sa8650p firmwareall versions
qualcomm sa8775p firmwareall versions
qualcomm sa9000p firmwareall versions
qualcomm snapdragon 888 5g mobile platform firmwareall versions
qualcomm snapdragon 888\+ 5g mobile platform \(sm8350-ac\) firmwareall versions
qualcomm snapdragon auto 5g modem-rf gen 2 firmwareall versions
qualcomm snapdragon w5\+ gen 1 wearable platform firmwareall versions
qualcomm snapdragon x72 5g modem-rf system firmwareall versions
qualcomm snapdragon x75 5g modem-rf system firmwareall versions
qualcomm sw5100 firmwareall versions
qualcomm sw5100p firmwareall versions
qualcomm wcd9340 firmwareall versions
qualcomm wcd9341 firmwareall versions
qualcomm wcd9370 firmwareall versions
qualcomm wcd9380 firmwareall versions
qualcomm wcd9385 firmwareall versions
qualcomm wcn3660b firmwareall versions
qualcomm wcn3680b firmwareall versions
qualcomm wcn3950 firmwareall versions
qualcomm wcn3980 firmwareall versions
qualcomm wcn3988 firmwareall versions

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Scoring & Timeline

7.8

HIGH · CVSS v3.1 · product-security@qualcomm.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD06 Aug 2025 · 08:15 AM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

Technical impact

partial

SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.htmlVendor Advisory

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