• Paul Bolle's avatar
    raw: test against runtime value of max_raw_minors · 5f32e463
    Paul Bolle authored
    commit 5bbb2ae3d6f896f8d2082d1eceb6131c2420b7cf upstream.
    
    bind_get() checks the device number it is called with. It uses
    MAX_RAW_MINORS for the upper bound. But MAX_RAW_MINORS is set at compile
    time while the actual number of raw devices can be set at runtime. This
    means the test can either be too strict or too lenient. And if the test
    ends up being too lenient bind_get() might try to access memory beyond
    what was allocated for "raw_devices".
    
    So check against the runtime value (max_raw_minors) in this function.
    Signed-off-by: default avatarPaul Bolle <pebolle@tiscali.nl>
    Acked-by: default avatarJan Kara <jack@suse.cz>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    5f32e463
raw.c 8.41 KB