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osdep/linux/blocklist.c (grub_install_get_blocklist): Check blocksize validity.

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This commit is contained in:
Vladimir Serbinenko 2015-01-20 15:19:35 +01:00
parent 4200ad44fe
commit 111ab3b9cc
2 changed files with 7 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2015-01-20 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/osdep/linux/blocklist.c (grub_install_get_blocklist): Check
blocksize validity.
2015-01-20 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/i386/pc/biosdisk.c: Check disk size sanity.

2
grub-core/osdep/linux/blocklist.c
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@ -82,6 +82,8 @@ grub_install_get_blocklist (grub_device_t root_dev,
strerror (errno));
if (bsize & (GRUB_DISK_SECTOR_SIZE - 1))
grub_util_error ("%s", _("blocksize is not divisible by 512"));
if (!bsize)
grub_util_error ("%s", _("invalid zero blocksize"));
mul = bsize >> GRUB_DISK_SECTOR_BITS;
nblocks = (core_size + bsize - 1) / bsize;
if (mul == 0 || nblocks == 0)