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heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.","Type":"Description","Title":null},{"CveYear":"2022","CveId":"185","Ordinal":"2","NoteData":"2022-02-11","Type":"Other","Title":"Published"},{"CveYear":"2022","CveId":"185","Ordinal":"3","NoteData":"2022-02-11","Type":"Other","Title":"Modified"}]}}}