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2010-03-01 Vladimir Serbinenko <phcoder@gmail.com> 

* fs/ext2.c (grub_ext2_read_block): Fix an integer overflow.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-03-01 21:00:02 +01:00
parent c6f2fe52f1
commit c4d0b332c5
2 changed files with 10 additions and 3 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2010-03-01 Vladimir Serbinenko <phcoder@gmail.com>
* fs/ext2.c (grub_ext2_read_block): Fix an integer overflow.
2010-03-01 Vladimir Serbinenko <phcoder@gmail.com>
Wait for user entry basing on presence of output rather than on errors.

9
fs/ext2.c
View File

@ -436,7 +436,8 @@ grub_ext2_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
grub_uint32_t indir[blksz / 4];
if (grub_disk_read (data->disk,
grub_le_to_cpu32 (inode->blocks.indir_block)
((grub_disk_addr_t)
grub_le_to_cpu32 (inode->blocks.indir_block))
<< log2_blksz,
0, blksz, indir))
return grub_errno;
@ -452,13 +453,15 @@ grub_ext2_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
grub_uint32_t indir[blksz / 4];
if (grub_disk_read (data->disk,
grub_le_to_cpu32 (inode->blocks.double_indir_block)
((grub_disk_addr_t)
grub_le_to_cpu32 (inode->blocks.double_indir_block))
<< log2_blksz,
0, blksz, indir))
return grub_errno;
if (grub_disk_read (data->disk,
grub_le_to_cpu32 (indir[rblock / perblock])
((grub_disk_addr_t)
grub_le_to_cpu32 (indir[rblock / perblock]))
<< log2_blksz,
0, blksz, indir))
return grub_errno;