{"id":"CVE-2021-39640","aliases":["A-157294279","EUVD-2021-25997","GHSA-rq86-qqhj-2fcx","PUB-A-157294279"],"status":"published","title":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper...","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00103,"percentile":0.00995,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-667","CWE-787"],"published":"2021-12-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":":unknown:","fixed_in":[":2021-12-05"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2021-12-05"}]}],"versions":["Kernel"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/pixel/2021-12-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39640"},{"url":"https://github.com/advisories/GHSA-rq86-qqhj-2fcx"},{"url":"https://source.android.com/security/bulletin/2021-12-01","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-39640","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A","status":"published","published":"2021-12-15T18:05:54Z","modified":"2024-08-04T02:13:37.422Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-25997","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A","status":"published","published":"2021-12-15T18:05:54Z","modified":"2024-08-04T02:13:37Z","updated_at":"2026-11-03T03:24:22.709283Z"}],"ghsa":[{"id":"GHSA-rq86-qqhj-2fcx","title":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper...","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A","status":"published","published":"2021-12-16T00:00:34Z","modified":"2023-08-17T05:01:53Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:54:45.250925Z"}],"nvd":[{"id":"CVE-2021-39640","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A","status":"published","published":"2021-12-15T19:15:15.17Z","modified":"2026-06-17T04:03:55.64Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:07:02.566991Z"}],"osv":[{"id":"PUB-A-157294279","description":"In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2021-12-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:07.907985Z"}]}}