CVE-2021-35121
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free...
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free condition In the Synx driver in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free condition In the Synx driver in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- Record
CVE-2021-35121- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
EUVDEUVD-2021-21765
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free condition In the Synx driver in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- Record
EUVD-2021-21765- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jj9r-hxfw-c62h
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free...
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free condition In the Synx driver in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- Record
GHSA-jj9r-hxfw-c62h- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-129
- Updated
- 2026-11-02
NVD
An array index is improperly used to lock and unlock a mutex which can lead to a Use After Free condition In the Synx driver in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- Record
CVE-2021-35121- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-129
- Updated
- 2026-11-02
Affected products
- qualcomm, inc. snapdragon compute, snapdragon connectivity, snapdragon industrial iot, snapdragon mobile
- qualcomm apq8053 firmware
- qualcomm msm8953 firmware
- qualcomm qca6390 firmware
- qualcomm qca6391 firmware
- qualcomm qca6426 firmware
- qualcomm qca6436 firmware
- qualcomm qcm2290 firmware
- qualcomm qcm4290 firmware
- qualcomm qcs2290 firmware
- qualcomm qcs4290 firmware
- qualcomm qrb5165 firmware
Show 33 moreShow less
- qualcomm qrb5165m firmware
- qualcomm qrb5165n firmware
- qualcomm sd460 firmware
- qualcomm sd662 firmware
- qualcomm sd680 firmware
- qualcomm sd690 5g firmware
- qualcomm sd750g firmware
- qualcomm sd765 firmware
- qualcomm sd765g firmware
- qualcomm sd768g firmware
- qualcomm sd865 5g firmware
- qualcomm sd870 firmware
- qualcomm sdx55m firmware
- qualcomm sdxr2 5g firmware
- qualcomm sm7250p firmware
- qualcomm wcd9326 firmware
- qualcomm wcd9370 firmware
- qualcomm wcd9375 firmware
- qualcomm wcd9380 firmware
- qualcomm wcd9385 firmware
- qualcomm wcn3615 firmware
- qualcomm wcn3680b firmware
- qualcomm wcn3910 firmware
- qualcomm wcn3950 firmware
- qualcomm wcn3988 firmware
- qualcomm wcn3991 firmware
- qualcomm wcn3998 firmware
- qualcomm wcn6850 firmware
- qualcomm wcn6851 firmware
- qualcomm wsa8810 firmware
- qualcomm wsa8815 firmware
- qualcomm wsa8830 firmware
- qualcomm wsa8835 firmware
Affected packages
| Package | Affected | Fixed |
|---|---|---|
:linux_kernel:QualcommAndroid |
SoCVersion:0 up to SoCVersion:2022-06-05, plus listed versions SoCVersion |
SoCVersion:2022-06-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-35121 is a medium vulnerability (CVSS 6.7) in Qualcomm, Inc. Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial Iot, Snapdragon Mobile, published June 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 4th percentile. Fixed in :linux_kernel:Qualcomm SoCVersion:2022-06-05.