The reiserfs_copy_from_user_to_file_region function in reiserfs/file.c for Linux kernel 2.6.10 and 2.6.11 before 2.6.11-rc4, when running on 64-bit architectures, may allow local users to trigger a buffer overflow as a result of casting discrepancies between size_t and int data types.
Exploitability
AV:LAC:LAu:NImpact
C:NI:NA:P2.1/AV:L/AC:L/Au:N/C:N/I:N/A:P