linux-kernel - [PATCH 0/5] Ensure the copied buf is NULL terminated

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Message-Id: <20240422-fix-oob-read-v1-0-e02854c30174@gmail.com>
Date: Mon, 22 Apr 2024 23:41:35 +0700
From: Bui Quang Minh <minhquangbui99@...il.com>
To: Jesse Brandeburg <jesse.brandeburg@...el.com>, 
 Tony Nguyen <anthony.l.nguyen@...el.com>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Paul M Stillwell Jr <paul.m.stillwell.jr@...el.com>, 
 Rasesh Mody <rmody@...vell.com>, Sudarsana Kalluru <skalluru@...vell.com>, 
 GR-Linux-NIC-Dev@...vell.com, Krishna Gudipati <kgudipat@...cade.com>, 
 Anil Gurumurthy <anil.gurumurthy@...gic.com>, 
 Sudarsana Kalluru <sudarsana.kalluru@...gic.com>, 
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>, 
 Fabian Frederick <fabf@...net.be>, Saurav Kashyap <skashyap@...vell.com>, 
 Javed Hasan <jhasan@...vell.com>, GR-QLogic-Storage-Upstream@...vell.com, 
 Nilesh Javali <nilesh.javali@...ium.com>, Arun Easi <arun.easi@...ium.com>, 
 Manish Rangankar <manish.rangankar@...ium.com>, 
 Vineeth Vijayan <vneethv@...ux.ibm.com>, 
 Peter Oberparleiter <oberpar@...ux.ibm.com>, 
 Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, 
 Alexander Gordeev <agordeev@...ux.ibm.com>, 
 Christian Borntraeger <borntraeger@...ux.ibm.com>, 
 Sven Schnelle <svens@...ux.ibm.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org, 
 Saurav Kashyap <saurav.kashyap@...ium.com>, linux-s390@...r.kernel.org, 
 Jens Axboe <axboe@...nel.dk>, Bui Quang Minh <minhquangbui99@...il.com>
Subject: [PATCH 0/5] Ensure the copied buf is NULL terminated

Hi everyone,

I found that some drivers contains an out-of-bound read pattern like this

	kern_buf = memdup_user(user_buf, count);
	...
	sscanf(kern_buf, ...);

The sscanf can be replaced by some other string-related functions. This
pattern can lead to out-of-bound read of kern_buf in string-related
functions.

This series fix the above issue by replacing memdup_user with
memdup_user_nul or allocating count + 1 buffer then writing the NULL
terminator to end of buffer after userspace copying.

Thanks,
Quang Minh.

Signed-off-by: Bui Quang Minh <minhquangbui99@...il.com>
---
Bui Quang Minh (5):
      drivers/net/ethernet/intel-ice: ensure the copied buf is NULL terminated
      drivers/net/brocade-bnad: ensure the copied buf is NULL terminated
      drivers/scsi/bfa/bfad: ensure the copied buf is NULL terminated
      drivers/scsi/qedf: ensure the copied buf is NULL terminated
      drivers/s390/cio: ensure the copied buf is NULL terminated

 drivers/net/ethernet/brocade/bna/bnad_debugfs.c | 4 ++--
 drivers/net/ethernet/intel/ice/ice_debugfs.c    | 8 ++++----
 drivers/s390/cio/cio_inject.c                   | 3 ++-
 drivers/scsi/bfa/bfad_debugfs.c                 | 4 ++--
 drivers/scsi/qedf/qedf_debugfs.c                | 2 +-
 5 files changed, 11 insertions(+), 10 deletions(-)
---
base-commit: ed30a4a51bb196781c8058073ea720133a65596f
change-id: 20240422-fix-oob-read-19ae7f8f3711

Best regards,
-- 
Bui Quang Minh <minhquangbui99@...il.com>