{"id":"CVE-2021-35121","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-35121","generatedAt":"2026-10-27T21:09:18.072Z","title":"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","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","published":"2022-06-14T10:15:17.000Z","lastModified":"2026-06-17T03:57:15.000Z","status":"Modified","sourceIdentifier":"product-security@qualcomm.com","cvss":{"version":"3.1","score":6.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-129"],"affected":["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"],"epss":{"score":0.00153,"percentile":0.04403,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.qualcomm.com/company/product-security/bulletins/june-2022-bulletin","tags":["Patch","Vendor Advisory"],"source":"product-security@qualcomm.com"},{"url":"https://www.qualcomm.com/company/product-security/bulletins/june-2022-bulletin","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-35121","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}