diff options
Diffstat (limited to 'debian/patches/bugfix/all/ext4-make-sure-bitmaps-and-the-inode-table-don-t-ove.patch')
-rw-r--r-- | debian/patches/bugfix/all/ext4-make-sure-bitmaps-and-the-inode-table-don-t-ove.patch | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/debian/patches/bugfix/all/ext4-make-sure-bitmaps-and-the-inode-table-don-t-ove.patch b/debian/patches/bugfix/all/ext4-make-sure-bitmaps-and-the-inode-table-don-t-ove.patch deleted file mode 100644 index a1b2cfefdb78..000000000000 --- a/debian/patches/bugfix/all/ext4-make-sure-bitmaps-and-the-inode-table-don-t-ove.patch +++ /dev/null @@ -1,74 +0,0 @@ -From: Theodore Ts'o <tytso@mit.edu> -Date: Wed, 13 Jun 2018 23:08:26 -0400 -Subject: ext4: make sure bitmaps and the inode table don't overlap with bg - descriptors -Origin: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit?id=6b506a7d09854128b1da9571d879ee9dea3ffb02 -Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2018-10878 - -It's really bad when the allocation bitmaps and the inode table -overlap with the block group descriptors, since it causes random -corruption of the bg descriptors. So we really want to head those off -at the pass. - -https://bugzilla.kernel.org/show_bug.cgi?id=199865 - -Signed-off-by: Theodore Ts'o <tytso@mit.edu> ---- - fs/ext4/super.c | 25 +++++++++++++++++++++++++ - 1 file changed, 25 insertions(+) - ---- a/fs/ext4/super.c -+++ b/fs/ext4/super.c -@@ -2307,6 +2307,7 @@ static int ext4_check_descriptors(struct - struct ext4_sb_info *sbi = EXT4_SB(sb); - ext4_fsblk_t first_block = le32_to_cpu(sbi->s_es->s_first_data_block); - ext4_fsblk_t last_block; -+ ext4_fsblk_t last_bg_block = sb_block + ext4_bg_num_gdb(sb, 0) + 1; - ext4_fsblk_t block_bitmap; - ext4_fsblk_t inode_bitmap; - ext4_fsblk_t inode_table; -@@ -2339,6 +2340,14 @@ static int ext4_check_descriptors(struct - if (!sb_rdonly(sb)) - return 0; - } -+ if (block_bitmap >= sb_block + 1 && -+ block_bitmap <= last_bg_block) { -+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " -+ "Block bitmap for group %u overlaps " -+ "block group descriptors", i); -+ if (!sb_rdonly(sb)) -+ return 0; -+ } - if (block_bitmap < first_block || block_bitmap > last_block) { - ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " - "Block bitmap for group %u not in group " -@@ -2353,6 +2362,14 @@ static int ext4_check_descriptors(struct - if (!sb_rdonly(sb)) - return 0; - } -+ if (inode_bitmap >= sb_block + 1 && -+ inode_bitmap <= last_bg_block) { -+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " -+ "Inode bitmap for group %u overlaps " -+ "block group descriptors", i); -+ if (!sb_rdonly(sb)) -+ return 0; -+ } - if (inode_bitmap < first_block || inode_bitmap > last_block) { - ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " - "Inode bitmap for group %u not in group " -@@ -2367,6 +2384,14 @@ static int ext4_check_descriptors(struct - if (!sb_rdonly(sb)) - return 0; - } -+ if (inode_table >= sb_block + 1 && -+ inode_table <= last_bg_block) { -+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " -+ "Inode table for group %u overlaps " -+ "block group descriptors", i); -+ if (!sb_rdonly(sb)) -+ return 0; -+ } - if (inode_table < first_block || - inode_table + sbi->s_itb_per_group - 1 > last_block) { - ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: " |