e2fsprogs: CVE-2022-1304 out-of-bounds read/write via crafted filesystem

Source: https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
MR: 117430
Type: Security Fix
Disposition: Backport from https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?h=maint&id=ab51d587bb9b229b1fade1afd02e1574c1ba5c76
ChangeID: e6db00c6e8375a2e869fd2e4ead61ca9149eb8fa
Description:
          CVE-2022-1304 e2fsprogs: out-of-bounds read/write via crafted filesystem.
(From OE-Core rev: b4f9ba859ed1fe5e1d42258fee1dd2e8e85e7eba)

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 43 insertions, 0 deletions

diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs/CVE-2022-1304.patch b/meta/recipes-devtools/e2fsprogs/e2fsprogs/CVE-2022-1304.patch
new file mode 100644
index 0000000000..34e2567b25
--- /dev/null
+++ b/meta/recipes-devtools/e2fsprogs/e2fsprogs/CVE-2022-1304.patch
@@ -0,0 +1,42 @@
+From a66071ed6a0d1fa666d22dcb78fa6fcb3bf22df3 Mon Sep 17 00:00:00 2001
+From: Hitendra Prajapati <hprajapati@mvista.com>
+Date: Fri, 27 May 2022 14:01:50 +0530
+Subject: [PATCH] CVE-2022-1304
+
+Upstream-Status: Backport [https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?h=maint&id=ab51d587bb9b229b1fade1afd02e1574c1ba5c76]
+CVE: CVE-2022-1304
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+
+---
+ lib/ext2fs/extent.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c
+index ac3dbfec9..a1b1905cd 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));
+-- 
+2.25.1
+
diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.45.7.bb b/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.45.7.bb
index 3bc530e02b..3e6faf4cb8 100644
--- a/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.45.7.bb
+++ b/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.45.7.bb
@@ -6,6 +6,7 @@ SRC_URI += "file://remove.ldconfig.call.patch \
            file://mkdir_p.patch \
            file://0001-configure.ac-correct-AM_GNU_GETTEXT.patch \
            file://0001-intl-do-not-try-to-use-gettext-defines-that-no-longe.patch \
+           file://CVE-2022-1304.patch \
            "
 
 SRC_URI_append_class-native = " file://e2fsprogs-fix-missing-check-for-permission-denied.patch \