Set link to e2fsprogs.23993 via maintenance_release request
Rev SUSE:SLE-12:Update/7 Md5 722f018cb657336e7b57ddbb1af7c5ad 2022-05-12 15:14:54 abergmann None
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@ -1,3 +1,9 @@
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-------------------------------------------------------------------
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Fri Apr 29 16:35:06 UTC 2022 - Jan Kara <jack@suse.cz>
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- libext2fs-add-sanity-check-to-extent-manipulation.patch: libext2fs: add
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sanity check to extent manipulation (bsc#1198446 CVE-2022-1304)
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-------------------------------------------------------------------
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Thu Jan 9 15:19:10 UTC 2020 - Jan Kara <jack@suse.cz>
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@ -1,7 +1,7 @@
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#
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# spec file for package e2fsprogs
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#
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# Copyright (c) 2020 SUSE LINUX GmbH, Nuernberg, Germany.
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# Copyright (c) 2022 SUSE LLC
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#
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# All modifications and additions to the file contributed by third parties
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# remain the property of their copyright owners, unless otherwise agreed
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@ -46,7 +46,7 @@ Release: 0
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Summary: Utilities for the Second Extended File System
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License: GPL-2.0-only
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Group: System/Filesystems
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Url: http://e2fsprogs.sourceforge.net
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URL: http://e2fsprogs.sourceforge.net
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Requires: libcom_err2 >= %{version}
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Requires: libext2fs2 >= %{version}
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Source: http://downloads.sourceforge.net/project/e2fsprogs/e2fsprogs/v%{version}/e2fsprogs-%{version}.tar.gz
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@ -72,6 +72,7 @@ Patch14: Revert-mke2fs-prevent-creation-of-unmountable-ext4-w.patch
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Patch15: libext2fs-place-metadata-blocks-in-the-last-flex_bg-.patch
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Patch16: e2fsck-abort-if-there-is-a-corrupted-directory-block.patch
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Patch17: e2fsck-don-t-try-to-rehash-a-deleted-directory.patch
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Patch18: libext2fs-add-sanity-check-to-extent-manipulation.patch
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# Do not suppress make commands
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BuildRoot: %{_tmppath}/%{name}-%{version}-build
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@ -166,6 +167,7 @@ Development files for the com_err error message display library.
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%patch15 -p1
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%patch16 -p1
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%patch17 -p1
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%patch18 -p1
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cp %{SOURCE2} .
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%build
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@ -226,6 +228,7 @@ popd
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for libName in $LIBNAMES;
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do ln -s %{_libdir}/$libName %{buildroot}/%{_lib};
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done
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#EndUsrMerge
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%post
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/sbin/ldconfig
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@ -249,7 +252,7 @@ done
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%defattr(-, root, root)
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%doc RELEASE-NOTES README
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%config /etc/mke2fs.conf
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#UsrMerge
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#UsrMerge
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/sbin/badblocks
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/sbin/debugfs
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/sbin/dumpe2fs
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@ -284,7 +287,7 @@ done
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%{_sbindir}/resize2fs
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%{_sbindir}/tune2fs
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%{_sbindir}/e2image
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%{_sbindir}/logsave
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%{_sbindir}/logsave
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%{_bindir}/chattr
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%{_bindir}/lsattr
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%{_sbindir}/mklost+found
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56
libext2fs-add-sanity-check-to-extent-manipulation.patch
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56
libext2fs-add-sanity-check-to-extent-manipulation.patch
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@ -0,0 +1,56 @@
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From ab51d587bb9b229b1fade1afd02e1574c1ba5c76 Mon Sep 17 00:00:00 2001
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From: Lukas Czerner <lczerner@redhat.com>
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Date: Thu, 21 Apr 2022 19:31:48 +0200
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Subject: [PATCH] libext2fs: add sanity check to extent manipulation
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References: bsc#1198446 CVE-2022-1304
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It is possible to have a corrupted extent tree in such a way that a leaf
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node contains zero extents in it. Currently if that happens and we try
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to traverse the tree we can end up accessing wrong data, or possibly
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even uninitialized memory. Make sure we don't do that.
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Additionally make sure that we have a sane number of bytes passed to
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memmove() in ext2fs_extent_delete().
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Note that e2fsck is currently unable to spot and fix such corruption in
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pass1.
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Signed-off-by: Lukas Czerner <lczerner@redhat.com>
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Reported-by: Nils Bars <nils_bars@t-online.de>
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2068113
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Addresses: CVE-2022-1304
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Addresses-Debian-Bug: #1010263
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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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---
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lib/ext2fs/extent.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c
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index b324c7b0f8c8..1a206a16c13f 100644
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--- a/lib/ext2fs/extent.c
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+++ b/lib/ext2fs/extent.c
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@@ -495,6 +495,10 @@ retry:
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ext2fs_le16_to_cpu(eh->eh_entries);
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newpath->max_entries = ext2fs_le16_to_cpu(eh->eh_max);
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+ /* Make sure there is at least one extent present */
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+ if (newpath->left <= 0)
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+ return EXT2_ET_EXTENT_NO_DOWN;
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+
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if (path->left > 0) {
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ix++;
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newpath->end_blk = ext2fs_le32_to_cpu(ix->ei_block);
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@@ -1630,6 +1634,10 @@ errcode_t ext2fs_extent_delete(ext2_extent_handle_t handle, int flags)
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cp = path->curr;
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+ /* Sanity check before memmove() */
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+ if (path->left < 0)
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+ return EXT2_ET_EXTENT_LEAF_BAD;
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+
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if (path->left) {
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memmove(cp, cp + sizeof(struct ext3_extent_idx),
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path->left * sizeof(struct ext3_extent_idx));
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--
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2.34.1
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