diff options
Diffstat (limited to 'kernel/drivers/message/fusion/mptctl.c')
| -rw-r--r-- | kernel/drivers/message/fusion/mptctl.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/drivers/message/fusion/mptctl.c b/kernel/drivers/message/fusion/mptctl.c index 70bb7530b..02b5f69e1 100644 --- a/kernel/drivers/message/fusion/mptctl.c +++ b/kernel/drivers/message/fusion/mptctl.c @@ -1038,6 +1038,10 @@ kbuf_alloc_2_sgl(int bytes, u32 sgdir, int sge_offset, int *frags, int i, buflist_ent; int sg_spill = MAX_FRAGS_SPILL1; int dir; + + if (bytes < 0) + return NULL; + /* initialization */ *frags = 0; *blp = NULL; @@ -1859,6 +1863,15 @@ 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; |