Patch "scsi: qla2xxx: Fix potential NULL pointer dereference" has been added to the 4.19-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    scsi: qla2xxx: Fix potential NULL pointer dereference

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-qla2xxx-fix-potential-null-pointer-dereference.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 464ea494a40c6e3e0e8f91dd325408aaf21515ba Mon Sep 17 00:00:00 2001
From: Bikash Hazarika <bhazarika@xxxxxxxxxxx>
Date: Wed, 7 Jun 2023 17:08:37 +0530
Subject: scsi: qla2xxx: Fix potential NULL pointer dereference

From: Bikash Hazarika <bhazarika@xxxxxxxxxxx>

commit 464ea494a40c6e3e0e8f91dd325408aaf21515ba upstream.

Klocwork tool reported 'cur_dsd' may be dereferenced.  Add fix to validate
pointer before dereferencing the pointer.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Bikash Hazarika <bhazarika@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230607113843.37185-3-njavali@xxxxxxxxxxx
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/scsi/qla2xxx/qla_iocb.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -603,7 +603,8 @@ qla24xx_build_scsi_type_6_iocbs(srb_t *s
 	*((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_6);
 
 	/* No data transfer */
-	if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
+	if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE ||
+	    tot_dsds == 0) {
 		cmd_pkt->byte_count = cpu_to_le32(0);
 		return 0;
 	}


Patches currently in stable-queue which might be from bhazarika@xxxxxxxxxxx are

queue-4.19/scsi-qla2xxx-fix-potential-null-pointer-dereference.patch



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux