{"id":"ASB-A-260821414","details":"In __efi_rt_asm_wrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-260821414","CVE-2023-21102"],"modified":"2026-04-10T16:16:18.068628Z","published":"2023-05-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2023-05-01"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/984241bdc04f401c423005a52eb013b00e19358c"}],"affected":[{"package":{"name":":linux_kernel:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2023-05-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"severity":"High","fixes":["https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c","https://android.googlesource.com/kernel/common/+/984241bdc04f401c423005a52eb013b00e19358c"],"spl":"2023-05-05","types":["EoP"],"vanir_signatures":[{"source":"https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c","deprecated":false,"target":{"file":"arch/arm64/include/asm/efi.h"},"digest":{"threshold":0.9,"line_hashes":["179337840841991355642887043988593067606","5773807457505110754444059043052909632","282730260334074690969290374034554911948","134253192418214020651208017925988575156","232811901045737453688945005799129261957","218620793557511025058338371865771396683","339105349812813529627753795168013015537","276077201739349405452701792039390901192","253288503435522497287142918487731045661","226981391358113279537999084226866317163","88902760063645305806195411021768245062"]},"signature_type":"Line","signature_version":"v1","id":"ASB-A-260821414-eb7a78e9"}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-260821414.json"}}],"schema_version":"1.7.5"}