diff options
Diffstat (limited to 'meta/recipes-devtools/e2fsprogs/e2fsprogs/extents.patch')
| -rw-r--r-- | meta/recipes-devtools/e2fsprogs/e2fsprogs/extents.patch | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs/extents.patch b/meta/recipes-devtools/e2fsprogs/e2fsprogs/extents.patch deleted file mode 100644 index 2c09bb276d..0000000000 --- a/meta/recipes-devtools/e2fsprogs/e2fsprogs/extents.patch +++ /dev/null @@ -1,56 +0,0 @@ -CVE: CVE-2022-1304 -Upstream-Status: Backport [ ab51d587bb9b229b1fade1afd02e1574c1ba5c76 ] -Signed-off-by: Ross Burton <ross.burton@arm.com> - -From 347084c9c1ad20f47dae16f5a3dcd8628d5fc7b0 Mon Sep 17 00:00:00 2001 -From: Lukas Czerner <lczerner@redhat.com> -Date: Thu, 21 Apr 2022 19:31:48 +0200 -Subject: [PATCH] e2fsprogs: add sanity check to extent manipulation - -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> -Addressess: https://bugzilla.redhat.com/show_bug.cgi?id=2068113 ---- - lib/ext2fs/extent.c | 8 ++++++++ - 1 file changed, 8 insertions(+) - -diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c -index b324c7b0..1a206a16 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 - |