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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-03-21 11:09:42 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-09 21:31:37 -0400 |
| commit | 7709e9bdee96a904ebf18378c803a9288e10bb30 (patch) | |
| tree | 6beac9d42d2a15aa7f45bd4d68c7986c7227e743 /drivers/scsi | |
| parent | f4abab3f182b6b01e3e0f052721b4721a269a133 (diff) | |
| download | linux-7709e9bdee96a904ebf18378c803a9288e10bb30.tar.gz | |
scsi: dpt_i2o: Use after free in I2ORESETCMD ioctl
Here is another use after free if we reset the card. The adpt_hba_reset() function frees "pHba" on error. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/dpt_i2o.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index 6866975b25f3..5ceea8da7bb6 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -2051,13 +2051,16 @@ static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong ar } break; } - case I2ORESETCMD: - if(pHba->host) - spin_lock_irqsave(pHba->host->host_lock, flags); + case I2ORESETCMD: { + struct Scsi_Host *shost = pHba->host; + + if (shost) + spin_lock_irqsave(shost->host_lock, flags); adpt_hba_reset(pHba); - if(pHba->host) - spin_unlock_irqrestore(pHba->host->host_lock, flags); + if (shost) + spin_unlock_irqrestore(shost->host_lock, flags); break; + } case I2ORESCANCMD: adpt_rescan(pHba); break; |