{"schema_version":"1.9.0","id":"ASB-A-156071259","published":"2020-08-01T00:00:00Z","modified":"2026-09-11T15:42:03.104094163Z","aliases":["A-156071259","CVE-2020-12464"],"details":"In usb_sg_cancel of message.c, there is a possible use-after-free 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.","affected":[{"package":{"name":":linux_kernel:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2020-08-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/kernel/common/+/056ad39ee925"],"severity":"High","spl":"2020-08-05","types":["EoP"],"vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["255943705818962813189976031016472597529","26033224937548943097948035650581242614","526934606920560820297120827636957638","31740174451050260298108892113833111941","88334139816857127022371209949018334689","83400255864374188643152245675839267384","18976699313310297325405290768711954450","295323004618949905759279342173215295091","87686149460333506480774470036864217880","243721719629647059646551031181529773032","148076998368388731406663931420594976352","152475867996944593949176481686230090508"],"threshold":0.9},"id":"ASB-A-156071259-7e12f48b","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/056ad39ee925","target":{"file":"drivers/usb/core/message.c","truncated_path_level":1}},{"deprecated":false,"digest":{"function_hash":"3645988281826647388253086379590913140","length":555},"id":"ASB-A-156071259-e647a430","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/056ad39ee925","target":{"file":"drivers/usb/core/message.c","function":"usb_sg_cancel","truncated_path_level":1}}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-156071259.json"}}],"references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2020-08-01"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/056ad39ee925"}]}