File e2fsck-don-t-try-to-rehash-a-deleted-directory.patch of Package e2fsprogs.19068

From 71ba13755337e19c9a826dfc874562a36e1b24d3 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 19 Dec 2019 19:45:06 -0500
Subject: [PATCH] e2fsck: don't try to rehash a deleted directory
References: bsc#1160571 CVE-2019-5188

If directory has been deleted in pass1[bcd] processing, then we
shouldn't try to rehash the directory in pass 3a when we try to
rehash/reoptimize directories.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jan Kara <jack@suse.cz>
---
 e2fsck/pass1b.c | 4 ++++
 e2fsck/rehash.c | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/e2fsck/pass1b.c b/e2fsck/pass1b.c
index 5693b9cfcc5a..bca701cab94f 100644
--- a/e2fsck/pass1b.c
+++ b/e2fsck/pass1b.c
@@ -705,6 +705,10 @@ static void delete_file(e2fsck_t ctx, ext2_ino_t ino,
 		fix_problem(ctx, PR_1B_BLOCK_ITERATE, &pctx);
 	if (ctx->inode_bad_map)
 		ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
+	if (ctx->inode_reg_map)
+		ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
+	ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
+	ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
 	ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(dp->inode.i_mode));
 	quota_data_sub(ctx->qctx, &dp->inode, ino,
 		       pb.dup_blocks * fs->blocksize);
diff --git a/e2fsck/rehash.c b/e2fsck/rehash.c
index 3dd1e94131c6..2c908be04d70 100644
--- a/e2fsck/rehash.c
+++ b/e2fsck/rehash.c
@@ -1028,6 +1028,8 @@ void e2fsck_rehash_directories(e2fsck_t ctx)
 			if (!ext2fs_u32_list_iterate(iter, &ino))
 				break;
 		}
+		if (!ext2fs_test_inode_bitmap2(ctx->inode_dir_map, ino))
+			continue;
 
 		pctx.dir = ino;
 		if (first) {
-- 
2.16.4
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