CVE-2025-21485
Time-of-check Time-of-use (TOCTOU) Race Condition in DSP Service
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
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
Time-of-check Time-of-use (TOCTOU) Race Condition in DSP Service
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
- Record
CVE-2025-21485- 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-367
- Updated
- 2026-11-02
EUVDEUVD-2025-16704
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
- Record
EUVD-2025-16704- 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-w5w3-37x5-78hg
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
- Record
GHSA-w5w3-37x5-78hg- 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-367
- Updated
- 2026-11-02
NVD
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
- Record
CVE-2025-21485- 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-367
- Updated
- 2026-11-02
Affected products
- qualcomm fastconnect 6900 firmware
- 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 sxr2230p firmware
- qualcomm sxr2250p firmware
Show 18 moreShow less
- qualcomm sxr2330p firmware
- qualcomm wcd9378 firmware
- qualcomm wcd9380 firmware
- qualcomm wcd9385 firmware
- 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:2025-06-05, plus listed versions SoCVersion |
SoCVersion:2025-06-05 |
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-2025-21485 is a high vulnerability (CVSS 7.8) in Qualcomm Fastconnect 6900 Firmware, published June 1, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.08%, the 0th percentile. Fixed in platform/vendor/qcom/opensource/dsp-kernel SoCVersion:2025-06-05.
References
docs.qualcomm.com/product/publicresources/securitybulletin/june-2025-bulletin.html
nvd.nist.gov/vuln/detail/CVE-2025-21485
github.com/advisories/GHSA-w5w3-37x5-78hg
source.android.com/security/bulletin/2025-06-01
git.codelinaro.org/clo/la/platform/vendor/qcom/opensource/dsp-kernel/-/commit/46d7ca7086b86eb5daa6befcbe732b4f29cbd94d