linux-kernel - [PATCH 0/2] mtdchar_write_ioctl(): prevent integer overflow, use kvmalloc()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 16 May 2022 09:05:59 +0200
From:   Michał Kępień <kernel@...pniu.pl>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc:     linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] mtdchar_write_ioctl(): prevent integer overflow, use kvmalloc()

This patch series addresses two flaws in mtdchar_write_ioctl() found by
Richard Weinberger while he was reviewing v3 of the patch series
proposing a new MEMREAD ioctl [1].

Richard, I included a Suggested-by tag crediting you in both of the
patches in this series.  I hope that is okay with you, but please let me
know if it isn't.

Once this patch series is reviewed and accepted, I will apply similar
fixes in v4 of the MEMREAD ioctl patch series.

[1] https://lists.infradead.org/pipermail/linux-mtd/2022-February/091276.html

Michał Kępień (2):
  mtdchar: prevent integer overflow in a safety check
  mtdchar: use kvmalloc() for potentially large allocations

 drivers/mtd/mtdchar.c      | 13 ++++++++-----
 include/uapi/mtd/mtd-abi.h |  4 ++--
 2 files changed, 10 insertions(+), 7 deletions(-)

-- 
2.36.1