* CVE-2017-15874 busybox: Integer underflow in archival/libarchive/decompress_unlzma.c
(cherry picked from 9ac42c500586fa5f10a1f6d22c3f797df11b1f6b) Affects busybox <= 1.27.2 Upstream-Status: Backport [ https://git.busybox.net/busybox/commit/?id=9ac42c500586fa5f10a1f6d22c3f797df11b1f6b] CVE: CVE-2017-15874 Ref: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15874 Signed-off-by: Sinan Kaya <ok...@kernel.org> --- .../busybox/busybox/CVE-2017-15874.patch | 28 +++++++++++++++++++ meta/recipes-core/busybox/busybox_1.27.2.bb | 1 + 2 files changed, 29 insertions(+) create mode 100644 meta/recipes-core/busybox/busybox/CVE-2017-15874.patch diff --git a/meta/recipes-core/busybox/busybox/CVE-2017-15874.patch b/meta/recipes-core/busybox/busybox/CVE-2017-15874.patch new file mode 100644 index 0000000000..dece92c160 --- /dev/null +++ b/meta/recipes-core/busybox/busybox/CVE-2017-15874.patch @@ -0,0 +1,28 @@ +From e75c01bb3249df16201b482b79bb24bec3b58188 Mon Sep 17 00:00:00 2001 +From: Denys Vlasenko <vda.li...@googlemail.com> +Date: Fri, 27 Oct 2017 15:37:03 +0200 +Subject: [PATCH] unlzma: fix SEGV, closes 10436 + +Signed-off-by: Denys Vlasenko <vda.li...@googlemail.com> +--- + archival/libarchive/decompress_unlzma.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c +index 29eee2a..41e492f 100644 +--- a/archival/libarchive/decompress_unlzma.c ++++ b/archival/libarchive/decompress_unlzma.c +@@ -353,6 +353,10 @@ unpack_lzma_stream(transformer_state_t *xstate) + pos = buffer_pos - rep0; + if ((int32_t)pos < 0) { + pos += header.dict_size; ++ /* bug 10436 has an example file where this triggers: */ ++ if ((int32_t)pos < 0) ++ goto bad; ++ + /* see unzip_bad_lzma_2.zip: */ + if (pos >= buffer_size) + goto bad; +-- +2.19.0 + diff --git a/meta/recipes-core/busybox/busybox_1.27.2.bb b/meta/recipes-core/busybox/busybox_1.27.2.bb index 1ce4823d47..bab29728ee 100644 --- a/meta/recipes-core/busybox/busybox_1.27.2.bb +++ b/meta/recipes-core/busybox/busybox_1.27.2.bb @@ -47,6 +47,7 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \ file://busybox-CVE-2017-16544.patch \ file://busybox-fix-lzma-segfaults.patch \ file://umount-ignore-c.patch \ + file://CVE-2017-15874.patch \ " SRC_URI_append_libc-musl = " file://musl.cfg " -- 2.19.0 -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
