{"schema_version":"1.9.0","id":"ASB-A-175451802","published":"2021-05-01T00:00:00Z","modified":"2026-09-10T15:43:18.983809180Z","aliases":["A-175451802","CVE-2020-29661"],"details":"In tiocspgrp of tty_jobctrl.c, there is a possible use after free due to a race condition. 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":":2021-05-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/kernel/common/+/54ffccbf053b5b6ca4f6e45094b942fab92a25fc"],"severity":"High","spl":"2021-05-05","types":["EoP"],"vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["7338913957767132237580945162545283902","276140429312739768394680534261795675580","203989765631513543784047101143447013562","144040697814404936400616784663233098827","219487244008294298156309541912615923617","121723368273225809510853011269019301423","43185897151191301020763260751502390130"],"threshold":0.9},"id":"ASB-A-175451802-cde41775","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/54ffccbf053b5b6ca4f6e45094b942fab92a25fc","target":{"file":"drivers/tty/tty_jobctrl.c"}}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-175451802.json"}}],"references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2021-05-01"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/54ffccbf053b5b6ca4f6e45094b942fab92a25fc"}]}