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Red Hat Bugzilla – Attachment 144206 Details for
Bug 215419
CVE-2006-6054 ext2_check_page denial of service
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[patch]
upstream patch sent to LKML today
ext2_corrupt_dir (text/plain), 610 bytes, created by
Eric Sandeen
on 2006-12-21 19:00:06 UTC
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Description:
upstream patch sent to LKML today
Filename:
MIME Type:
Creator:
Eric Sandeen
Created:
2006-12-21 19:00:06 UTC
Size:
610 bytes
patch
obsolete
>Index: linux-2.6.19/fs/ext2/dir.c >=================================================================== >--- linux-2.6.19.orig/fs/ext2/dir.c >+++ linux-2.6.19/fs/ext2/dir.c >@@ -368,6 +368,14 @@ struct ext2_dir_entry_2 * ext2_find_entr > } > if (++n >= npages) > n = 0; >+ /* next page is past the blocks we've got */ >+ if (unlikely(n > (dir->i_blocks >> (PAGE_CACHE_SHIFT - 9)))) { >+ ext2_error(dir->i_sb, __FUNCTION__, >+ "dir %lu size %lld exceeds block count %llu", >+ dir->i_ino, dir->i_size, >+ (unsigned long long)dir->i_blocks); >+ goto out; >+ } > } while (n != start); > out: > return NULL;
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bug 215419
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