{"id":"ASB-A-196046570", "published":"2021-12-01T00:00:00Z", "modified":"2026-06-19T15:21:58.810540849Z", "aliases":["CVE-2021-0961", "A-196046570"], "details":"In quota_proc_write of xt_quota2.c, there is a possible way to read kernel memory due to uninitialized data. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.", "affected":[{"package":{"name":":linux_kernel:", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":":0"}, {"fixed":":2021-12-05"}]}], "versions":["Kernel"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/kernel/common/+/e113eb454e92", "https://android.googlesource.com/kernel/common/+/60a4c35570d9", "https://android.googlesource.com/kernel/common/+/4b05a506bda0"], "severity":"Moderate", "spl":"2021-12-05", "types":["ID"], "vanir_signatures":[{"deprecated":false, "digest":{"function_hash":"331079331341337927145497544267760580337", "length":465}, "id":"ASB-A-196046570-8bf4814e", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/kernel/common/+/4b05a506bda0", "target":{"file":"net/netfilter/xt_quota2.c", "function":"quota_proc_write"}}, {"deprecated":false, "digest":{"line_hashes":["300791232439875133632716496871912264620", "70038903204576172867030549493066166263", "333088528853129269023570041671620429249", "42207680203461640924637962347689161127", "300791232439875133632716496871912264620", "70038903204576172867030549493066166263", "333088528853129269023570041671620429249", "218940457137836909070047315208247151542"], "threshold":0.9}, "id":"ASB-A-196046570-9601096f", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/kernel/common/+/e113eb454e92", "target":{"file":"net/netfilter/xt_quota2.c"}}, {"deprecated":false, "digest":{"line_hashes":["153322424961026016917606699709339014016", "185668712431662013693342578498774993036", "25905861964383034273808152654118250552", "195120841472415210120064218568328695493"], "threshold":0.9}, "id":"ASB-A-196046570-ac70b66c", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/kernel/common/+/4b05a506bda0", "target":{"file":"net/netfilter/xt_quota2.c"}}]}}], "references":[{"type":"ADVISORY", "url":"https://source.android.com/security/bulletin/2021-12-01"}, {"type":"FIX", "url":"https://android.googlesource.com/kernel/common/+/e113eb454e92"}, {"type":"FIX", "url":"https://android.googlesource.com/kernel/common/+/60a4c35570d9"}, {"type":"FIX", "url":"https://android.googlesource.com/kernel/common/+/4b05a506bda0"}]}