{"id":"ASB-A-150694665","details":"In gre_handle_offloads of ip_gre.c, there is a possible page fault due to an invalid memory access. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-150694665","CVE-2021-39633"],"modified":"2026-09-21T16:00:45.521740994Z","published":"2022-01-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2022-01-01"},{"type":"FIX","url":"http://android.googlesource.com/kernel/common/+/1d011c4803c72f3907eccfc1ec63caefb852fcbf"}],"affected":[{"package":{"name":":linux_kernel:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2022-01-05"}]}],"versions":["Kernel"],"ecosystem_specific":{"severity":"High","spl":"2022-01-05","types":["ID"],"vanir_signatures":[{"deprecated":true,"digest":{"line_hashes":["110645044466692755255968319713222398679","182346871114727394199261601235907835902","60235824133216559719319124150257643183","8614246226498173402592427908140037717"],"threshold":0.9},"id":"ASB-A-150694665-4aaca501","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/kernel/common/+/1d011c4803c72f3907eccfc1ec63caefb852fcbf","target":{"file":"net/ipv4/ip_gre.c"}},{"source":"https://android.googlesource.com/kernel/common/+/1d011c4803c72f3907eccfc1ec63caefb852fcbf","target":{"file":"net/ipv4/ip_gre.c","function":"gre_handle_offloads"},"deprecated":true,"digest":{"length":126,"function_hash":"36343471337147875092234569293076229804"},"id":"ASB-A-150694665-a98b847c","signature_type":"Function","signature_version":"v1"}],"fixes":["https://android.googlesource.com/kernel/common/+/1d011c4803c72f3907eccfc1ec63caefb852fcbf"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-150694665.json"}}],"schema_version":"1.9.0"}