Bug#779466: unblock: e2fsprogs/1.42.12-1.1
package: release.debian.org
user: release.debian.org@packages.debian.org
usertags: unblock
severity: normal
x-debbugs-cc: debian-boot@lists.debian.org
Please consider unblocking e2fsprogs. A security issue is fixed.
unblock e2fsprogs/1.42.12-1.1
unblock-udeb e2fsprogs/1.42.12-1.1
diff -Nru e2fsprogs-1.42.12/debian/changelog e2fsprogs-1.42.12/debian/changelog
--- e2fsprogs-1.42.12/debian/changelog 2014-08-29 12:51:13.000000000 +0000
+++ e2fsprogs-1.42.12/debian/changelog 2015-02-22 02:18:20.000000000 +0000
@@ -1,3 +1,10 @@
+e2fsprogs (1.42.12-1.1) unstable; urgency=high
+
+ * Non-maintainer upload by the Security Team.
+ * Fix CVE-2015-1572: incomplete fix for CVE-2015-0247 (closes: #778948).
+
+ -- Michael Gilbert <mgilbert@debian.org> Sun, 22 Feb 2015 01:50:57 +0000
+
e2fsprogs (1.42.12-1) unstable; urgency=low
* New upstream version
diff -Nru e2fsprogs-1.42.12/debian/patches/CVE-2015-1572.patch e2fsprogs-1.42.12/debian/patches/CVE-2015-1572.patch
--- e2fsprogs-1.42.12/debian/patches/CVE-2015-1572.patch 1970-01-01 00:00:00.000000000 +0000
+++ e2fsprogs-1.42.12/debian/patches/CVE-2015-1572.patch 2015-02-22 02:18:20.000000000 +0000
@@ -0,0 +1,48 @@
+From 49d0fe2a14f2a23da2fe299643379b8c1d37df73
+From: Theodore Ts'o <tytso@mit.edu>
+Date: Fri, 6 Feb 2015 12:46:39 -0500
+Subject: libext2fs: fix potential buffer overflow in closefs()
+
+The bug fix in f66e6ce4446: "libext2fs: avoid buffer overflow if
+s_first_meta_bg is too big" had a typo in the fix for
+ext2fs_closefs(). In practice most of the security exposure was from
+the openfs path, since this meant if there was a carefully crafted
+file system, buffer overrun would be triggered when the file system was
+opened.
+
+However, if corrupted file system didn't trip over some corruption
+check, and then the file system was modified via tune2fs or debugfs,
+such that the superblock was marked dirty and then written out via the
+closefs() path, it's possible that the buffer overrun could be
+triggered when the file system is closed.
+
+Also clear up a signed vs unsigned warning while we're at it.
+
+Thanks to Nick Kralevich <nnk@google.com> for asking me to look at
+compiler warning in the code in question, which led me to notice the
+bug in f66e6ce4446.
+
+Addresses: CVE-2015-1572
+
+Signed-off-by: Theodore Ts'o <tytso@mit.edu>
+
+--- a/lib/ext2fs/closefs.c
++++ b/lib/ext2fs/closefs.c
+@@ -287,7 +287,7 @@ errcode_t ext2fs_flush2(ext2_filsys fs, int flags)
+ dgrp_t j;
+ #endif
+ char *group_ptr;
+- int old_desc_blocks;
++ blk64_t old_desc_blocks;
+ struct ext2fs_numeric_progress_struct progress;
+
+ EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
+@@ -346,7 +346,7 @@ errcode_t ext2fs_flush2(ext2_filsys fs, int flags)
+ group_ptr = (char *) group_shadow;
+ if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) {
+ old_desc_blocks = fs->super->s_first_meta_bg;
+- if (old_desc_blocks > fs->super->s_first_meta_bg)
++ if (old_desc_blocks > fs->desc_blocks)
+ old_desc_blocks = fs->desc_blocks;
+ } else
+ old_desc_blocks = fs->desc_blocks;
diff -Nru e2fsprogs-1.42.12/debian/patches/series e2fsprogs-1.42.12/debian/patches/series
--- e2fsprogs-1.42.12/debian/patches/series 1970-01-01 00:00:00.000000000 +0000
+++ e2fsprogs-1.42.12/debian/patches/series 2015-02-22 02:18:20.000000000 +0000
@@ -0,0 +1 @@
+CVE-2015-1572.patch
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