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| author | Alex Shi <alex.shi@linaro.org> | 2016-01-14 22:25:14 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-01-14 22:25:14 +0800 |
| commit | f90ae1b62bedd8b57966a7be68855f2d43170db6 (patch) | |
| tree | dc332d18219749a17b163d740b8713be5e8d940b /drivers/message/fusion/mptctl.c | |
| parent | 346a8beb760237fb0fed811045ec92c799f48d54 (diff) | |
| parent | 60917545df1ffc7f918550512dc4a14758f74784 (diff) | |
Merge remote-tracking branch 'lts/linux-3.18.y' into linux-linaro-lsk-v3.18lsk-v3.18-16.01
Diffstat (limited to 'drivers/message/fusion/mptctl.c')
| -rw-r--r-- | drivers/message/fusion/mptctl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c index 70bb7530b22c..fc7393729081 100644 --- a/drivers/message/fusion/mptctl.c +++ b/drivers/message/fusion/mptctl.c @@ -1859,6 +1859,15 @@ mptctl_do_mpt_command (struct mpt_ioctl_command karg, void __user *mfPtr) } spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags); + /* Basic sanity checks to prevent underflows or integer overflows */ + if (karg.maxReplyBytes < 0 || + karg.dataInSize < 0 || + karg.dataOutSize < 0 || + karg.dataSgeOffset < 0 || + karg.maxSenseBytes < 0 || + karg.dataSgeOffset > ioc->req_sz / 4) + return -EINVAL; + /* Verify that the final request frame will not be too large. */ sz = karg.dataSgeOffset * 4; |