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ChangeLog, dirblock.c: 

dirblock.c (ext2fs_read_dir_block): Fix a potential case where we may
  	overrun allocated memory in case of a corrupted filesystem (or an
  	e2fsck test case :-) when byte-swapping the directory block.
bitmap-optimize
Theodore Ts'o 2001-01-05 22:27:06 +00:00
parent cdaf1fa78f
commit e446d71838
2 changed files with 6 additions and 1 deletions
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5
lib/ext2fs/ChangeLog
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@ -1,5 +1,10 @@
2001-01-05 <tytso@snap.thunk.org>
* dirblock.c (ext2fs_read_dir_block): Fix a potential case where
we may overrun allocated memory in case of a corrupted
filesystem (or an e2fsck test case :-) when byte-swapping
the directory block.
* ext2fs.h: Indent the #warning to fix gcc -Wall complaint.
* mkjournal.c (ext2fs_add_journal_device): Fix various gcc -Wall

2
lib/ext2fs/dirblock.c
View File

@ -39,7 +39,7 @@ errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
return 0;
p = (char *) buf;
end = (char *) buf + fs->blocksize;
while (p < end) {
while (p < end-8) {
dirent = (struct ext2_dir_entry *) p;
dirent->inode = ext2fs_swab32(dirent->inode);
dirent->rec_len = ext2fs_swab16(dirent->rec_len);