{"id":"PUB-A-234475629","details":"In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-234475629","CVE-2022-20572"],"modified":"2026-03-11T06:32:46.616614Z","published":"2022-12-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2022-12-01"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/678d7a09525c2edb6b2436c1d5a9a0b9292e31d7"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/952141fb9237ec54cda66e04622725daae29d273"}],"affected":[{"package":{"name":":linux_kernel:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2022-12-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"vanir_signatures":[{"id":"PUB-A-234475629-147d63fb","digest":{"line_hashes":["6750721687830903541387938765679298548","129728381512143920073312385761700384458","136290462382097668927891831171427395639","120423728662642149267013688500226027288"],"threshold":0.9},"deprecated":false,"target":{"file":"drivers/md/dm-verity-target.c"},"signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/678d7a09525c2edb6b2436c1d5a9a0b9292e31d7","signature_type":"Line"},{"id":"PUB-A-234475629-5db060ca","digest":{"line_hashes":["101980834836173696207231592808249676659","206763611688154899365995941677988173469","96004355582768959731363167358732599836","244026125455597786919918268467767645320"],"threshold":0.9},"deprecated":false,"target":{"file":"drivers/md/dm-verity-target.c"},"signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/952141fb9237ec54cda66e04622725daae29d273","signature_type":"Line"}],"severity":"Moderate","fixes":["https://android.googlesource.com/kernel/common/+/678d7a09525c2edb6b2436c1d5a9a0b9292e31d7","https://android.googlesource.com/kernel/common/+/952141fb9237ec54cda66e04622725daae29d273"],"spl":"2022-12-05","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv-test/PUB-A-234475629.json"}}],"schema_version":"1.7.5"}