diff --git a/gnu/local.mk b/gnu/local.mk
index b1cf3c3de5..3dae58f82f 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -570,8 +570,6 @@ dist_patch_DATA = \
%D%/packages/patches/ceph-disable-unittest-throttle.patch \
%D%/packages/patches/ceph-skip-collect-sys-info-test.patch \
%D%/packages/patches/ceph-skip-unittest_blockdev.patch \
- %D%/packages/patches/chicken-CVE-2017-6949.patch \
- %D%/packages/patches/chicken-CVE-2017-11343.patch \
%D%/packages/patches/chmlib-inttypes.patch \
%D%/packages/patches/clang-libc-search-path.patch \
%D%/packages/patches/clang-3.8-libc-search-path.patch \
diff --git a/gnu/packages/patches/chicken-CVE-2017-11343.patch b/gnu/packages/patches/chicken-CVE-2017-11343.patch
deleted file mode 100644
index 1d46ad50d9..0000000000
--- a/gnu/packages/patches/chicken-CVE-2017-11343.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-Fix CVE-2017-11343:
-
-https://lists.nongnu.org/archive/html/chicken-announce/2017-07/msg00000.html
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11343
-
-Patch copied from upstream mailing list:
-
-http://lists.gnu.org/archive/html/chicken-hackers/2017-06/txtod8Pa1wGU0.txt
-
-From ae2633195cc5f4f61c9da4ac90f0c14c010dcc3d Mon Sep 17 00:00:00 2001
-From: Peter Bex
-Date: Fri, 30 Jun 2017 15:39:45 +0200
-Subject: [PATCH 2/2] Initialize symbol table after setting up randomization
-
-Otherwise, the symbol table wouldn't be correctly randomized.
----
- NEWS | 3 +++
- runtime.c | 2 +-
- 2 files changed, 4 insertions(+), 1 deletion(-)
-
-#diff --git a/NEWS b/NEWS
-#index f4b0e041..6588b30e 100644
-#--- a/NEWS
-#+++ b/NEWS
-#@@ -96,6 +96,9 @@
-# buffer overrun and/or segfault (thanks to Lemonboy).
-# - CVE-2017-9334: `length' no longer crashes on improper lists (fixes
-# #1375, thanks to "megane").
-#+ - The randomization factor of the symbol table was set before
-#+ the random seed was set, causing it to have a fixed value on many
-#+ platforms.
-#
-# - Core Libraries
-# - Unit "posix": If file-lock, file-lock/blocking or file-unlock are
-diff --git a/runtime.c b/runtime.c
-index 81c54dd2..a4580abc 100644
---- a/runtime.c
-+++ b/runtime.c
-@@ -799,7 +799,6 @@ int CHICKEN_initialize(int heap, int stack, int symbols, void *toplevel)
- C_initial_timer_interrupt_period = INITIAL_TIMER_INTERRUPT_PERIOD;
- C_timer_interrupt_counter = INITIAL_TIMER_INTERRUPT_PERIOD;
- memset(signal_mapping_table, 0, sizeof(int) * NSIG);
-- initialize_symbol_table();
- C_dlerror = "cannot load compiled code dynamically - this is a statically linked executable";
- error_location = C_SCHEME_FALSE;
- C_pre_gc_hook = NULL;
-@@ -816,6 +815,7 @@ int CHICKEN_initialize(int heap, int stack, int symbols, void *toplevel)
- callback_continuation_level = 0;
- gc_ms = 0;
- (void)C_randomize(C_fix(time(NULL)));
-+ initialize_symbol_table();
-
- if (profiling) {
- #ifndef C_NONUNIX
---
-2.11.0
-
diff --git a/gnu/packages/patches/chicken-CVE-2017-6949.patch b/gnu/packages/patches/chicken-CVE-2017-6949.patch
deleted file mode 100644
index 00552eec76..0000000000
--- a/gnu/packages/patches/chicken-CVE-2017-6949.patch
+++ /dev/null
@@ -1,132 +0,0 @@
-From: LemonBoy
-Date: Fri, 10 Mar 2017 16:29:47 +0100
-Subject: [PATCH] Add bound checking to all srfi-4 vector allocations.
-
-Do what C_allocate_vector already does and prevent the creation of a
-vector that's too big or too small.
-We should be very careful to avoid the latter case because the
-allocation size is directly fed into `malloc' as 'x + sizeof(C_header)'
-thus making possible to successfully allocate a vector smaller than the
-C_header structure and get C_block_header_init to write over
-uninitialized memory.
-
-To reduce code duplication, type checking is moved from each of the
-make-*vector procedures to the common "alloc" helper procedure.
-
-Signed-off-by: Peter Bex
-Signed-off-by: Kooda
----
- srfi-4.scm | 34 +++++++++++++++-------------------
- 1 file changed, 15 insertions(+), 19 deletions(-)
-
-diff --git a/srfi-4.scm b/srfi-4.scm
-index 7f5412b..69f58ba 100644
---- a/srfi-4.scm
-+++ b/srfi-4.scm
-@@ -255,24 +255,28 @@ EOF
-
- ;;; Basic constructors:
-
--(let* ([ext-alloc
-- (foreign-lambda* scheme-object ([int bytes])
-- "C_word *buf = (C_word *)C_malloc(bytes + sizeof(C_header));"
-+(let* ((ext-alloc
-+ (foreign-lambda* scheme-object ((size_t bytes))
-+ "C_word *buf;"
-+ "if (bytes > C_HEADER_SIZE_MASK) C_return(C_SCHEME_FALSE);"
-+ "buf = (C_word *)C_malloc(bytes + sizeof(C_header));"
- "if(buf == NULL) C_return(C_SCHEME_FALSE);"
- "C_block_header_init(buf, C_make_header(C_BYTEVECTOR_TYPE, bytes));"
-- "C_return(buf);") ]
-- [ext-free
-- (foreign-lambda* void ([scheme-object bv])
-- "C_free((void *)C_block_item(bv, 1));") ]
-- [alloc
-+ "C_return(buf);") )
-+ (ext-free
-+ (foreign-lambda* void ((scheme-object bv))
-+ "C_free((void *)C_block_item(bv, 1));") )
-+ (alloc
- (lambda (loc len ext?)
-+ (##sys#check-exact len loc)
-+ (when (fx< len 0) (##sys#error loc "size is negative" len))
- (if ext?
-- (let ([bv (ext-alloc len)])
-+ (let ((bv (ext-alloc len)))
- (or bv
- (##sys#error loc "not enough memory - cannot allocate external number vector" len)) )
-- (let ([bv (##sys#allocate-vector len #t #f #t)]) ; this could be made better...
-+ (let ((bv (##sys#allocate-vector len #t #f #t))) ; this could be made better...
- (##core#inline "C_string_to_bytevector" bv)
-- bv) ) ) ] )
-+ bv) ) ) ) )
-
- (set! release-number-vector
- (lambda (v)
-@@ -282,7 +286,6 @@ EOF
-
- (set! make-u8vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-u8vector)
- (let ((v (##sys#make-structure 'u8vector (alloc 'make-u8vector len ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -295,7 +298,6 @@ EOF
-
- (set! make-s8vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-s8vector)
- (let ((v (##sys#make-structure 's8vector (alloc 'make-s8vector len ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -308,7 +310,6 @@ EOF
-
- (set! make-u16vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-u16vector)
- (let ((v (##sys#make-structure 'u16vector (alloc 'make-u16vector (##core#inline "C_fixnum_shift_left" len 1) ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -321,7 +322,6 @@ EOF
-
- (set! make-s16vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-s16vector)
- (let ((v (##sys#make-structure 's16vector (alloc 'make-s16vector (##core#inline "C_fixnum_shift_left" len 1) ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -334,7 +334,6 @@ EOF
-
- (set! make-u32vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-u32vector)
- (let ((v (##sys#make-structure 'u32vector (alloc 'make-u32vector (##core#inline "C_fixnum_shift_left" len 2) ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -347,7 +346,6 @@ EOF
-
- (set! make-s32vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-s32vector)
- (let ((v (##sys#make-structure 's32vector (alloc 'make-s32vector (##core#inline "C_fixnum_shift_left" len 2) ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -360,7 +358,6 @@ EOF
-
- (set! make-f32vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-f32vector)
- (let ((v (##sys#make-structure 'f32vector (alloc 'make-f32vector (##core#inline "C_fixnum_shift_left" len 2) ext?))))
- (when (and ext? fin?) (set-finalizer! v ext-free))
- (if (not init)
-@@ -375,7 +372,6 @@ EOF
-
- (set! make-f64vector
- (lambda (len #!optional (init #f) (ext? #f) (fin? #t))
-- (##sys#check-exact len 'make-f64vector)
- (let ((v (##sys#make-structure
- 'f64vector
- (alloc 'make-f64vector (##core#inline "C_fixnum_shift_left" len 3) ext?))))
---
-2.1.4
-
diff --git a/gnu/packages/scheme.scm b/gnu/packages/scheme.scm
index bafc3da332..f1d73c2a7d 100644
--- a/gnu/packages/scheme.scm
+++ b/gnu/packages/scheme.scm
@@ -336,17 +336,14 @@ mashups, office (web agendas, mail clients, ...), etc.")
(define-public chicken
(package
(name "chicken")
- (version "4.12.0")
+ (version "4.13.0")
(source (origin
(method url-fetch)
(uri (string-append "https://code.call-cc.org/releases/"
version "/chicken-" version ".tar.gz"))
(sha256
(base32
- "12b9gaa9lqh39lj1v4wm48f6z8ww3jdkvc5bh9gqqvn6kd2wwnk0"))
- (patches
- (search-patches "chicken-CVE-2017-6949.patch"
- "chicken-CVE-2017-11343.patch"))))
+ "0hvckhi5gfny3mlva6d7y9pmx7cbwvq0r7mk11k3sdiik9hlkmdd"))))
(build-system gnu-build-system)
(arguments
`(#:modules ((guix build gnu-build-system)