Patch "hpsa: fix an sprintf() overflow in the reset handler" has been added to the 4.2-stable tree
Subsystems (3)
This is a note to let you know that I've just added the patch titled
hpsa: fix an sprintf() overflow in the reset handler
to the 4.2-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:
hpsa-fix-an-sprintf-overflow-in-the-reset-handler.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
2dc127bb299d1c7436a08e79193bd0251068356eMon Sep 17 00:00:00 2001
From: Dan Carpenter <[email protected]>
Date: Thu, 4 Jun 2015 17:47:56 +0300
Subject: hpsa: fix an sprintf() overflow in the reset handler
From: Dan Carpenter <[email protected]>
commit 2dc127bb299d1c7436a08e79193bd0251068356e upstream.
The string "cmd %d RESET FAILED, new lockup detected" is not quite large enough so the sprintf() will overflow. I have increased the size of the buffer and also changed the sprintf calls to snprintf.
--- drivers/scsi/hpsa.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
drivers/scsi/hpsa.c +9 -6
@@ -5104,7 +5104,7 @@ static int hpsa_eh_device_reset_handler(int rc;struct ctlr_info *h;struct hpsa_scsi_dev_t *dev; -char msg[40 ]; +char msg[48 ];/* find the controller to which the command to be aborted was sent */ h =sdev_to_hba (scsicmd->device);
@@ -5122,16 +5122,18 @@ static int hpsa_eh_device_reset_handler(/* if controller locked up, we can guarantee command won't complete */ if (lockup_detected (h)) { -sprintf (msg,"cmd %d RESET FAILED, lockup detected" , -hpsa_get_cmd_index (scsicmd)); +snprintf (msg,sizeof (msg), +"cmd %d RESET FAILED, lockup detected" , +hpsa_get_cmd_index (scsicmd));hpsa_show_dev_msg (KERN_WARNING , h, dev, msg);return FAILED ; }/* this reset request might be the result of a lockup; check */ if (detect_controller_lockup (h)) { -sprintf (msg,"cmd %d RESET FAILED, new lockup detected" , -hpsa_get_cmd_index (scsicmd)); +snprintf (msg,sizeof (msg), +"cmd %d RESET FAILED, new lockup detected" , +hpsa_get_cmd_index (scsicmd));hpsa_show_dev_msg (KERN_WARNING , h, dev, msg);return FAILED ; }
@@ -5145,7 +5147,8 @@ static int hpsa_eh_device_reset_handler(/* send a reset to the SCSI LUN which the command was sent to */ rc =hpsa_do_reset (h, dev, dev->scsi3addr,HPSA_RESET_TYPE_LUN ,DEFAULT_REPLY_QUEUE ); -sprintf (msg,"reset %s" , rc ==0 ?"completed successfully" :"failed" ); +snprintf (msg,sizeof (msg),"reset %s" , + rc ==0 ?"completed successfully" :"failed" );hpsa_show_dev_msg (KERN_WARNING , h, dev, msg);return rc ==0 ?SUCCESS :FAILED ; }
Patches currently in stable-queue which might be from [email protected] are
queue-4.2/hv-util-checking-the-wrong-variable.patch queue-4.2/ath10k-fix-dma_mapping_error-handling.patch queue-4.2/hpsa-fix-an-sprintf-overflow-in-the-reset-handler.patch queue-4.2/extcon-fix-signedness-bugs-about-break-error-handling.patch