Set link to e2fsprogs.23987 via maintenance_release request

Rev SUSE:SLE-15-SP4:Update/1 Md5 23c42c00758f5f8f7f389933825fe19b 2022-05-17 15:44:41 darix None

e2fsprogs.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Apr 29 15:49:06 UTC 2022 - Jan Kara <jack@suse.cz>
+
+- libext2fs-add-sanity-check-to-extent-manipulation.patch: libext2fs: add
+  sanity check to extent manipulation (bsc#1198446 CVE-2022-1304)
+
 -------------------------------------------------------------------
 Mon Oct  4 16:57:08 UTC 2021 - Jan Kara <jack@suse.cz>
 

e2fsprogs.spec

@@ -101,6 +101,7 @@ Patch14:        tune2fs-Fix-conversion-of-quota-files.patch
 Patch15:        e2fsck-Do-not-trash-user-limits-when-processing-orph.patch
 Patch16:        debugfs-Fix-headers-for-quota-commands.patch
 Patch17:        quota-Drop-dead-code.patch
+Patch18:        libext2fs-add-sanity-check-to-extent-manipulation.patch
 # Do not suppress make commands
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
@@ -277,6 +278,7 @@ cp %{SOURCE2} .
 %patch15 -p1
 %patch16 -p1
 %patch17 -p1
+%patch18 -p1
 
 %build
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objects

libext2fs-add-sanity-check-to-extent-manipulation.patch

@@ -0,0 +1,56 @@
+From ab51d587bb9b229b1fade1afd02e1574c1ba5c76 Mon Sep 17 00:00:00 2001
+From: Lukas Czerner <lczerner@redhat.com>
+Date: Thu, 21 Apr 2022 19:31:48 +0200
+Subject: [PATCH] libext2fs: add sanity check to extent manipulation
+References: bsc#1198446 CVE-2022-1304
+
+It is possible to have a corrupted extent tree in such a way that a leaf
+node contains zero extents in it. Currently if that happens and we try
+to traverse the tree we can end up accessing wrong data, or possibly
+even uninitialized memory. Make sure we don't do that.
+
+Additionally make sure that we have a sane number of bytes passed to
+memmove() in ext2fs_extent_delete().
+
+Note that e2fsck is currently unable to spot and fix such corruption in
+pass1.
+
+Signed-off-by: Lukas Czerner <lczerner@redhat.com>
+Reported-by: Nils Bars <nils_bars@t-online.de>
+Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2068113
+Addresses: CVE-2022-1304
+Addresses-Debian-Bug: #1010263
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+---
+ lib/ext2fs/extent.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c
+index b324c7b0f8c8..1a206a16c13f 100644
+--- a/lib/ext2fs/extent.c
++++ b/lib/ext2fs/extent.c
+@@ -495,6 +495,10 @@ retry:
+ 			ext2fs_le16_to_cpu(eh->eh_entries);
+ 		newpath->max_entries = ext2fs_le16_to_cpu(eh->eh_max);
+ 
++		/* Make sure there is at least one extent present */
++		if (newpath->left <= 0)
++			return EXT2_ET_EXTENT_NO_DOWN;
++
+ 		if (path->left > 0) {
+ 			ix++;
+ 			newpath->end_blk = ext2fs_le32_to_cpu(ix->ei_block);
+@@ -1630,6 +1634,10 @@ errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags)
+ 
+ 	cp = path->curr;
+ 
++	/* Sanity check before memmove() */
++	if (path->left < 0)
++		return EXT2_ET_EXTENT_LEAF_BAD;
++
+ 	if (path->left) {
+ 		memmove(cp, cp + sizeof(struct ext3_extent_idx),
+ 			path->left * sizeof(struct ext3_extent_idx));
+-- 
+2.34.1
+