CVE-2025-21436
Use After Free in DSP Service
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Use After Free in DSP Service
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.
- Record
CVE-2025-21436- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
EUVDEUVD-2025-9996
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.
- Record
EUVD-2025-9996- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v97v-vwrw-5r2q
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes...
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.
- Record
GHSA-v97v-vwrw-5r2q- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.
- Record
CVE-2025-21436- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
Affected products
- qualcomm fastconnect 7800 firmware
- qualcomm qmp1000 firmware
- qualcomm sm8735 firmware
- qualcomm sm8750 firmware
- qualcomm sm8750p firmware
- qualcomm snapdragon 8 gen 3 mobile platform firmware
- qualcomm snapdragon w5\+ gen 1 wearable platform firmware
- qualcomm sw5100 firmware
- qualcomm sw5100p firmware
- qualcomm sxr2330p firmware
- qualcomm wcd9378 firmware
- qualcomm wcd9380 firmware
Show 14 moreShow less
- qualcomm wcd9390 firmware
- qualcomm wcd9395 firmware
- qualcomm wcn7750 firmware
- qualcomm wcn7860 firmware
- qualcomm wcn7861 firmware
- qualcomm wcn7880 firmware
- qualcomm wcn7881 firmware
- qualcomm wsa8830 firmware
- qualcomm wsa8832 firmware
- qualcomm wsa8835 firmware
- qualcomm wsa8840 firmware
- qualcomm wsa8845 firmware
- qualcomm wsa8845h firmware
- qualcomm, inc. snapdragon
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/vendor/qcom/opensource/dsp-kernelAndroid |
SoCVersion:0 up to SoCVersion:2025-04-05, plus listed versions SoCVersion |
SoCVersion:2025-04-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21436 is a high vulnerability (CVSS 7.8) in Qualcomm Fastconnect 7800 Firmware, published April 1, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. Fixed in platform/vendor/qcom/opensource/dsp-kernel SoCVersion:2025-04-05.
References
docs.qualcomm.com/product/publicresources/securitybulletin/april-2025-bulletin.html
nvd.nist.gov/vuln/detail/CVE-2025-21436
github.com/advisories/GHSA-v97v-vwrw-5r2q
source.android.com/security/bulletin/2025-04-01
git.codelinaro.org/clo/la/platform/vendor/qcom/opensource/dsp-kernel/-/commit/d773536ae72f899be041e8e4683d0270de20f3b5