diff --git a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r6.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r6.ebuild
deleted file mode 100644
index 2418efc22c..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r6.ebuild
+++ /dev/null
@@ -1,41 +0,0 @@
-# Copyright 1999-2010 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/dev-util/bsdiff/bsdiff-4.3-r2.ebuild,v 1.1 2010/12/13 00:35:03 flameeyes Exp $
-
-EAPI=2
-
-inherit eutils toolchain-funcs flag-o-matic
-
-IUSE=""
-
-DESCRIPTION="bsdiff: Binary Differencer using a suffix alg"
-HOMEPAGE="http://www.daemonology.net/bsdiff/"
-SRC_URI="http://www.daemonology.net/bsdiff/${P}.tar.gz"
-
-SLOT="0"
-LICENSE="BSD-2"
-KEYWORDS="alpha amd64 arm arm64 hppa ia64 mips ppc sparc x86 ~x86-fbsd ~x86-freebsd ~amd64-linux ~x86-linux ~ppc-macos"
-
-RDEPEND="app-arch/bzip2"
-DEPEND="${RDEPEND}"
-
-src_prepare() {
-	epatch ${FILESDIR}/4.3_bspatch-support-input-output-positioning.patch || die
-	epatch ${FILESDIR}/4.3_bsdiff-convert-to-sais-lite-suffix-sort.patch || die
-}
-
-doecho() {
-	echo "$@"
-	"$@"
-}
-
-src_compile() {
-	append-lfs-flags
-	doecho $(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o bsdiff bsdiff.c sais.c -lbz2 || die "failed compiling bsdiff"
-	doecho $(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o bspatch bspatch.c -lbz2 || die "failed compiling bspatch"
-}
-
-src_install() {
-	dobin bs{diff,patch} || die
-	doman bs{diff,patch}.1 || die
-}
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r7.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r7.ebuild
new file mode 100644
index 0000000000..1c36fc7add
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/bsdiff-4.3-r7.ebuild
@@ -0,0 +1,40 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit flag-o-matic toolchain-funcs
+
+DESCRIPTION="bsdiff: Binary Differencer using a suffix alg"
+HOMEPAGE="https://www.daemonology.net/bsdiff/"
+SRC_URI="https://www.daemonology.net/bsdiff/${P}.tar.gz"
+
+SLOT="0"
+LICENSE="BSD-2"
+# Flatcar: enable arm64
+KEYWORDS="~alpha amd64 ~arm arm64 hppa arm64 ~ia64 ~mips ppc sparc x86 ~amd64-linux ~x86-linux ~ppc-macos"
+
+RDEPEND="app-arch/bzip2"
+
+PATCHES=(
+	"${FILESDIR}/${P}-CVE-2014-9862.patch"
+	# Flatcar: Apply patch to change suffix sort to sais-lite
+	"${FILESDIR}/${PV}_bsdiff-convert-to-sais-lite-suffix-sort.patch"
+)
+
+src_compile() {
+	doecho() {
+		echo "$@"
+		"$@"
+	}
+	append-lfs-flags
+	# Flatcar: build including sais.c, which comes from 3rd-party patch
+	# 4.3_bsdiff-convert-to-sais-lite-suffix-sort.patch.
+	doecho $(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o bsdiff bsdiff.c sais.c -lbz2 || die "failed compiling bsdiff"
+	doecho $(tc-getCC) ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o bspatch bspatch.c -lbz2 || die "failed compiling bspatch"
+}
+
+src_install() {
+	dobin bs{diff,patch}
+	doman bs{diff,patch}.1
+}
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/4.3_bspatch-support-input-output-positioning.patch b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/4.3_bspatch-support-input-output-positioning.patch
deleted file mode 100644
index 928fa00706..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/4.3_bspatch-support-input-output-positioning.patch
+++ /dev/null
@@ -1,343 +0,0 @@
---- bsdiff-4.3/bspatch.c	2005-08-16 15:14:00.000000000 -0700
-+++ bsdiff-4.3-new/bspatch.c	2010-10-12 13:57:08.000000000 -0700
-@@ -3,7 +3,7 @@
-  * All rights reserved
-  *
-  * Redistribution and use in source and binary forms, with or without
-- * modification, are permitted providing that the following conditions 
-+ * modification, are permitted providing that the following conditions
-  * are met:
-  * 1. Redistributions of source code must retain the above copyright
-  *    notice, this list of conditions and the following disclaimer.
-@@ -29,6 +29,9 @@
- #endif
- 
- #include <bzlib.h>
-+#include <errno.h>
-+#include <inttypes.h>
-+#include <stdint.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
-@@ -36,6 +39,264 @@
- #include <unistd.h>
- #include <fcntl.h>
- 
-+#define JOIN(a, b) __JOIN(a, b)
-+#define __JOIN(a, b) a ## b
-+#define COMPILE_ASSERT(expr, message) \
-+	typedef char JOIN(message, JOIN(_, __LINE__)) [(expr) ? 1 : -1]
-+
-+COMPILE_ASSERT(sizeof(int64_t) == 8, int64_t_64_bit);
-+COMPILE_ASSERT(sizeof(off_t) == 8, off_t_64_bit);
-+
-+#define MIN(a, b) \
-+	((a) < (b) ? (a) : (b))
-+
-+static const char kFdFilePrefix[] = "/dev/fd/";
-+
-+// Reads next int from *ints. The int should be terminated with a comma
-+// or NULL char. *ints will be updated to the space right after the comma
-+// or set to NULL if this was the last number. This assumes the input is
-+// a valid string, as validated with PositionsStringIsValid().
-+// Returns 1 on success.
-+int NextInt64(const char** ints, int64_t *out) {
-+	if (!ints[0])
-+		return 0;
-+	int r = sscanf(*ints, "%" PRIi64, out);
-+	if (r == 1) {
-+		const char* next_comma = strchr(*ints, ',');
-+		const char* next_colon = strchr(*ints, ':');
-+		if (!next_comma && !next_colon)
-+			*ints = NULL;
-+		else if (!next_comma)
-+			*ints = next_colon + 1;
-+		else if (!next_colon)
-+			*ints = next_comma + 1;
-+		else
-+			*ints = MIN(next_comma, next_colon) + 1;
-+		return 1;
-+	}
-+	return 0;
-+}
-+
-+COMPILE_ASSERT(sizeof(intmax_t) == 8, intmax_t_not_64_bit);
-+
-+// Returns 1 if str can be converted to int64_t without over/underflowing.
-+// str is assumed to point to an optional negative sign followed by numbers,
-+// optionally followed by non-numeric characters, followed by '\0'.
-+int IsValidInt64(const char* str) {
-+	char* end_ptr = 0;
-+	errno = 0;
-+	intmax_t result = strtoimax(str, &end_ptr, /* base: */ 10);
-+	return errno == 0;
-+}
-+
-+// Input validator. Make sure the positions string is well formatted.
-+// All numerical values are checked to make sure they don't over/underflow
-+// int64_t. Returns 1 if valid.
-+int PositionsStringIsValid(const char* positions) {
-+	if (positions == NULL)
-+		errx(1, "bad string");
-+
-+	// Special case: empty string is valid
-+	if (!positions[0])
-+		return 1;
-+
-+	// Use a state machine to determine if the string is valid.
-+	// Key: (s): state, ((s)) valid end state.
-+	// n (negative_valid) is a boolean that starts out as true.
-+	// If n is true, ':' is the delimiter, otherwise ','.
-+	//
-+	//         .--------------------------.
-+	//         |                          | n ? ':' : ',' ; n = !n
-+	//         V  '-'&&n           0-9    |
-+	// start->(0)------------->(1)----->((2))---.
-+	//           `--------------------->     <--' 0-9
-+	//              0-9
-+	int state = 0;
-+	int negative_valid = 1;
-+	const char* number_start = positions;
-+	for (;; positions++) {
-+		char c = *positions;
-+		switch (state) {
-+			case 0:
-+				if (c == '-' && negative_valid) {
-+					state = 1;
-+					continue;
-+				}
-+				if (isdigit(c)) {
-+					state = 2;
-+					continue;
-+				}
-+				return 0;
-+			case 1:
-+				if (isdigit(c)) {
-+					state = 2;
-+					continue;
-+				}
-+				return 0;
-+			case 2:
-+				if (isdigit(c))
-+					continue;
-+				// number_start must point to a valid number
-+				if (!IsValidInt64(number_start)) {
-+					return 0;
-+				}
-+				if ((negative_valid && c == ':') ||
-+				    (!negative_valid && c == ',')) {
-+					state = 0;
-+					number_start = positions + 1;
-+					negative_valid = !negative_valid;
-+					continue;
-+				}
-+				return (c == '\0');
-+		}
-+	}
-+}
-+
-+static const int64_t kMaxLength = sizeof(size_t) > 4 ? INT64_MAX : SIZE_MAX;
-+
-+// Reads into a buffer a series of byte ranges from filename.
-+// Each range is a pair of comma-separated ints from positions.
-+// -1 as an offset means a sparse-hole.
-+// E.g. If positions were "1,5:23,4:-1,8:3,7", then we would return a buffer
-+// consisting of 5 bytes from offset 1 of the file, followed by
-+// 4 bytes from offset 23, then 8 bytes of all zeros, then 7 bytes from
-+// offset 3 in the file.
-+// Returns NULL on error.
-+static char* PositionedRead(const char* filename,
-+                            const char* positions,
-+                            ssize_t* old_size) {
-+	if (!PositionsStringIsValid(positions)) {
-+		errx(1, "invalid positions string for read\n");
-+	}
-+
-+	// Get length
-+	const char* p = positions;
-+	int64_t length = 0;
-+	for (;;) {
-+		int64_t value;
-+		if (0 == NextInt64(&p, &value)) {
-+			break;
-+		}
-+		int r = NextInt64(&p, &value);
-+		if (r == 0) {
-+			errx(1, "bad length parse\n");
-+		}
-+		if (value < 0) {
-+			errx(1, "length can't be negative\n");
-+		}
-+		length += value;
-+	}
-+
-+	// Malloc
-+	if (length > 0x40000000) {  // 1 GiB; sanity check
-+		errx(1, "Read length too long (exceeds 1 GiB)");
-+	}
-+	// Following bsdiff convention, allocate length + 1 to avoid malloc(0)
-+	char* buf = malloc(length + 1);
-+	if (buf == NULL) {
-+		errx(1, "malloc failed\n");
-+	}
-+	char* buf_tail = buf;
-+
-+	int fd = -1;
-+	int should_close = 1;
-+	if (strlen(filename) > strlen(kFdFilePrefix) &&
-+		!strncmp(filename, kFdFilePrefix, strlen(kFdFilePrefix))) {
-+		sscanf(filename + strlen(kFdFilePrefix), "%d", &fd);
-+		should_close = 0;
-+	} else {
-+		fd = open(filename, O_RDONLY);
-+	}
-+	if (fd < 0) {
-+		errx(1, "open failed for read\n");
-+	}
-+
-+	// Read bytes
-+	p = positions;
-+	for (;;) {
-+		int64_t offset, read_length;
-+		if (NextInt64(&p, &offset) == 0) {
-+			break;
-+		}
-+		if (offset < 0) {
-+			errx(1, "no support for sparse positions "
-+			     "yet during read\n");
-+		}
-+		if (NextInt64(&p, &read_length) == 0) {
-+			errx(1, "bad length parse (should never happen)\n");
-+		}
-+		if (read_length < 0) {
-+			errx(1, "length can't be negative "
-+			     "(should never happen)\n");
-+		}
-+		if (read_length > kMaxLength) {
-+			errx(1, "read length too large\n");
-+		}
-+		ssize_t rc = pread(fd, buf_tail, (size_t)read_length, (off_t)offset);
-+		if (rc != read_length) {
-+			errx(1, "read failed\n");
-+		}
-+		buf_tail += rc;
-+	}
-+	if (should_close)
-+		close(fd);
-+	*old_size = length;
-+	return buf;
-+}
-+
-+static void PositionedWrite(const char* filename,
-+                            const char* positions,
-+                            const char* buf,
-+                            ssize_t new_size) {
-+	if (!PositionsStringIsValid(positions)) {
-+		errx(1, "invalid positions string for write\n");
-+	}
-+	int fd = -1;
-+	int should_close = 1;
-+	if (strlen(filename) > strlen(kFdFilePrefix) &&
-+		!strncmp(filename, kFdFilePrefix, strlen(kFdFilePrefix))) {
-+		sscanf(filename + strlen(kFdFilePrefix), "%d", &fd);
-+		should_close = 0;
-+	} else {
-+		fd = open(filename, O_WRONLY | O_CREAT, 0666);
-+	}
-+	if (fd < 0) {
-+		errx(1, "open failed for write\n");
-+	}
-+
-+	for (;;) {
-+		int64_t offset, length;
-+		if (NextInt64(&positions, &offset) == 0) {
-+			break;
-+		}
-+		if (NextInt64(&positions, &length) == 0) {
-+			errx(1, "bad length parse for write\n");
-+		}
-+		if (length < 0) {
-+			errx(1, "length can't be negative for write\n");
-+		}
-+		if (length > kMaxLength) {
-+			errx(1, "write length too large\n");
-+		}
-+
-+		if (offset < 0) {
-+			// Sparse hole. Skip.
-+		} else {
-+			ssize_t rc = pwrite(fd, buf, (size_t)length, (off_t)offset);
-+			if (rc != length) {
-+				errx(1, "write failed\n");
-+			}
-+		}
-+		buf += length;
-+		new_size -= length;
-+	}
-+	if (new_size != 0) {
-+		errx(1, "output position length doesn't match new size\n");
-+	}
-+	if (should_close)
-+		close(fd);
-+}
-+
- static off_t offtin(u_char *buf)
- {
- 	off_t y;
-@@ -69,7 +330,13 @@
- 	off_t lenread;
- 	off_t i;
- 
--	if(argc!=4) errx(1,"usage: %s oldfile newfile patchfile\n",argv[0]);
-+	if ((argc != 6) && (argc != 4)) {
-+		errx(1,"usage: %s oldfile newfile patchfile \\\n"
-+			"  [in_offset,in_length,in_offset,in_length,... \\\n"
-+			"  out_offset,out_length,"
-+			"out_offset,out_length,...]\n",argv[0]);
-+	}
-+	int using_positioning = (argc == 6);
- 
- 	/* Open patch file */
- 	if ((f = fopen(argv[3], "r")) == NULL)
-@@ -132,12 +399,18 @@
- 	if ((epfbz2 = BZ2_bzReadOpen(&ebz2err, epf, 0, 0, NULL, 0)) == NULL)
- 		errx(1, "BZ2_bzReadOpen, bz2err = %d", ebz2err);
- 
--	if(((fd=open(argv[1],O_RDONLY,0))<0) ||
--		((oldsize=lseek(fd,0,SEEK_END))==-1) ||
--		((old=malloc(oldsize+1))==NULL) ||
--		(lseek(fd,0,SEEK_SET)!=0) ||
--		(read(fd,old,oldsize)!=oldsize) ||
--		(close(fd)==-1)) err(1,"%s",argv[1]);
-+	// Read
-+
-+	if (!using_positioning) {
-+		if(((fd=open(argv[1],O_RDONLY,0))<0) ||
-+			((oldsize=lseek(fd,0,SEEK_END))==-1) ||
-+			((old=malloc(oldsize+1))==NULL) ||
-+			(lseek(fd,0,SEEK_SET)!=0) ||
-+			(read(fd,old,oldsize)!=oldsize) ||
-+			(close(fd)==-1)) err(1,"%s",argv[1]);
-+	} else {
-+		old = PositionedRead(argv[1], argv[4], &oldsize);
-+	}
- 	if((new=malloc(newsize+1))==NULL) err(1,NULL);
- 
- 	oldpos=0;newpos=0;
-@@ -193,9 +466,13 @@
- 		err(1, "fclose(%s)", argv[3]);
- 
- 	/* Write the new file */
--	if(((fd=open(argv[2],O_CREAT|O_TRUNC|O_WRONLY,0666))<0) ||
--		(write(fd,new,newsize)!=newsize) || (close(fd)==-1))
--		err(1,"%s",argv[2]);
-+	if (!using_positioning) {
-+		if(((fd=open(argv[2],O_CREAT|O_TRUNC|O_WRONLY,0666))<0) ||
-+			(write(fd,new,newsize)!=newsize) || (close(fd)==-1))
-+			err(1,"%s",argv[2]);
-+	} else {
-+		PositionedWrite(argv[2], argv[5], new, newsize);
-+	}
- 
- 	free(new);
- 	free(old);
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/bsdiff-4.3-CVE-2014-9862.patch b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/bsdiff-4.3-CVE-2014-9862.patch
new file mode 100644
index 0000000000..7aab818090
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/dev-util/bsdiff/files/bsdiff-4.3-CVE-2014-9862.patch
@@ -0,0 +1,15 @@
+diff --git a/bspatch.c b/bspatch.c
+index 8d95633..ab77722 100644
+--- a/bspatch.c
++++ b/bspatch.c
+
+@@ -187,6 +187,10 @@
+ 		};
+ 
+ 		/* Sanity-check */
++		if ((ctrl[0] < 0) || (ctrl[1] < 0))
++			errx(1,"Corrupt patch\n");
++
++		/* Sanity-check */
+ 		if(newpos+ctrl[0]>newsize)
+ 			errx(1,"Corrupt patch\n");