{"cve":"CVE-2021-35121","nvd":{"published":"2022-06-14T10:15:17.470","modified":"2026-06-17T03:57:14.843","status":"Modified","description":"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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.7},"cwes":["CWE-129"],"references":["https://www.qualcomm.com/company/product-security/bulletins/june-2022-bulletin","https://www.qualcomm.com/company/product-security/bulletins/june-2022-bulletin"],"products":["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","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"],"source":"nvd","synced_at":"2026-10-19T21:32:39.174919249+00:00"},"epss":{"cve":"CVE-2021-35121","score":0.00153,"percentile":0.04438,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}