{"schema_version":"1.9.0","id":"ASB-A-174737972","published":"2021-04-01T00:00:00Z","modified":"2026-09-11T15:42:03.104094163Z","aliases":["A-174737972","CVE-2020-25705"],"details":"In icmp_global_allow of icmp.c, there is a possible disclosure of UDP source ports due to a side channel information disclosure. This could lead to remote information disclosure 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":":2021-04-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/kernel/common/+/d6c552505c0d1719dda42b4af2def0618bd7bf54"],"severity":"High","spl":"2021-04-05","types":["ID"],"vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["163913056625793112109650011569155398386","210684640381025930440861970689826949797","209938629944047462960407534985341434993","40753138780160875603608046948079932055","297873878207537430882684102534028570754","308012898973444846626945894151657072823","230341944539684975838520879358771435882"],"threshold":0.9},"id":"ASB-A-174737972-43743423","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/d6c552505c0d1719dda42b4af2def0618bd7bf54","target":{"file":"net/ipv4/icmp.c"}},{"deprecated":false,"digest":{"function_hash":"319530313875119990490265042306097655903","length":676},"id":"ASB-A-174737972-4bb1e52a","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/d6c552505c0d1719dda42b4af2def0618bd7bf54","target":{"file":"net/ipv4/icmp.c","function":"icmp_global_allow"}}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-174737972.json"}}],"references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2021-04-01"},{"type":"FIX","url":"https://android.googlesource.com/kernel/common/+/d6c552505c0d1719dda42b4af2def0618bd7bf54"}]}