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| author | Michael Schmitz <schmitzmic@gmail.com> | 2023-06-20 22:17:23 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-06-20 22:28:17 +0200 |
| commit | fc3d092c6bb48d5865fec15ed5b333c12f36288c (patch) | |
| tree | 1b75b889f58b30cb1b3a24381ab65d638b443cac /lib/memweight.c | |
| parent | block: add capacity validation in bdev_add_partition() (diff) | |
| download | linux-fc3d092c6bb48d5865fec15ed5b333c12f36288c.tar.xz linux-fc3d092c6bb48d5865fec15ed5b333c12f36288c.zip | |
block: fix signed int overflow in Amiga partition support
The Amiga partition parser module uses signed int for partition sector
address and count, which will overflow for disks larger than 1 TB.
Use sector_t as type for sector address and size to allow using disks
up to 2 TB without LBD support, and disks larger than 2 TB with LBD.
This bug was reported originally in 2012, and the fix was created by
the RDB author, Joanne Dow <jdow@earthlink.net>. A patch had been
discussed and reviewed on linux-m68k at that time but never officially
submitted. This patch differs from Joanne's patch only in its use of
sector_t instead of unsigned int. No checking for overflows is done
(see patch 3 of this series for that).
Reported-by: Martin Steigerwald <Martin@lichtvoll.de>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=43511
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Message-ID: <201206192146.09327.Martin@lichtvoll.de>
Cc: <stable@vger.kernel.org> # 5.2
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Martin Steigerwald <Martin@lichtvoll.de>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230620201725.7020-2-schmitzmic@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/memweight.c')
0 files changed, 0 insertions, 0 deletions