One simple fix for a driver use after free.
The patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Jan Kara (1):
scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
And the diffstat:
drivers/scsi/vmw_pvscsi.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
With full diff below.
James
---
diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
index ecee4b3ff073..377b07b2feeb 100644
--- a/drivers/scsi/vmw_pvscsi.c
+++ b/drivers/scsi/vmw_pvscsi.c
@@ -763,6 +763,7 @@ static int pvscsi_queue_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd
struct pvscsi_adapter *adapter = shost_priv(host);
struct pvscsi_ctx *ctx;
unsigned long flags;
+ unsigned char op;
spin_lock_irqsave(&adapter->hw_lock, flags);
@@ -775,13 +776,14 @@ static int pvscsi_queue_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd
}
cmd->scsi_done = done;
+ op = cmd->cmnd[0];
dev_dbg(&cmd->device->sdev_gendev,
- "queued cmd %p, ctx %p, op=%x\n", cmd, ctx, cmd->cmnd[0]);
+ "queued cmd %p, ctx %p, op=%x\n", cmd, ctx, op);
spin_unlock_irqrestore(&adapter->hw_lock, flags);
- pvscsi_kick_io(adapter, cmd->cmnd[0]);
+ pvscsi_kick_io(adapter, op);
return 0;
}
The pull request you sent on Fri, 28 Jun 2019 16:48:23 -0700:
> git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/5b607ba862f30364aef0b0d40cab8afccf339616
Thank you!
--
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker