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author | Chen Gang <gang.chen@asianux.com> | 2013-03-07 18:25:41 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2013-03-08 00:35:44 -0500 |
commit | f39479363e0361c8bb4397481c01a7c3a1a3c8ac (patch) | |
tree | b2619455915812602af6c2f19e84d435d9b8ca7c /net/netlabel | |
parent | 2e85d67690cf3ea3f074a6e872f675226883fe7f (diff) | |
download | lwn-f39479363e0361c8bb4397481c01a7c3a1a3c8ac.tar.gz lwn-f39479363e0361c8bb4397481c01a7c3a1a3c8ac.zip |
drivers/isdn: checkng length to be sure not memory overflow
sizeof (cmd.parm.cmsg.para) is 50 (MAX_CAPI_PARA_LEN).
sizeof (cmd.parm) is 80+, but less than 100.
strlen(msg) may be more than 80+ (Modem-Commandbuffer, less than 255).
isdn_tty_send_msg is called by isdn_tty_parse_at
the relative parameter is m->mdmcmd (atemu *m)
the relative command may be "+M..."
so need check the length to be sure not memory overflow.
cmd.parm is a union, and need keep original valid buffer length no touch
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlabel')
0 files changed, 0 insertions, 0 deletions