2 files changed, 105 insertions, 0 deletions

diff --git a/meta/recipes-devtools/nasm/nasm/CVE-2022-44370.patch b/meta/recipes-devtools/nasm/nasm/CVE-2022-44370.patch
new file mode 100644
index 0000000000..1bd49c9fd9
--- /dev/null
+++ b/meta/recipes-devtools/nasm/nasm/CVE-2022-44370.patch
@@ -0,0 +1,104 @@
+From b37677f7e40276bd8f504584bcba2c092f1146a8 Mon Sep 17 00:00:00 2001
+From: "H. Peter Anvin" <hpa@zytor.com>
+Date: Mon, 7 Nov 2022 10:26:03 -0800
+Subject: [PATCH] quote_for_pmake: fix counter underrun resulting in segfault
+
+while (nbs--) { ... } ends with nbs == -1. Rather than a minimal fix,
+introduce mempset() to make these kinds of errors less likely in the
+future.
+
+Fixes: https://bugzilla.nasm.us/show_bug.cgi?id=3392815
+Reported-by: <13579and24680@gmail.com>
+Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+Upstream-Status: Backport
+CVE: CVE-2022-4437
+
+Reference to upstream patch:
+[https://github.com/netwide-assembler/nasm/commit/2d4e6952417ec6f08b6f135d2b5d0e19b7dae30d]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ asm/nasm.c         | 12 +++++-------
+ configure.ac       |  1 +
+ include/compiler.h |  7 +++++++
+ 3 files changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/asm/nasm.c b/asm/nasm.c
+index 7a7f8b4..675cff4 100644
+--- a/asm/nasm.c
++++ b/asm/nasm.c
+@@ -1,6 +1,6 @@
+ /* ----------------------------------------------------------------------- *
+  *
+- *   Copyright 1996-2020 The NASM Authors - All Rights Reserved
++ *   Copyright 1996-2022 The NASM Authors - All Rights Reserved
+  *   See the file AUTHORS included with the NASM distribution for
+  *   the specific copyright holders.
+  *
+@@ -814,8 +814,7 @@ static char *quote_for_pmake(const char *str)
+     }
+
+     /* Convert N backslashes at the end of filename to 2N backslashes */
+-    if (nbs)
+-        n += nbs;
++    n += nbs;
+
+     os = q = nasm_malloc(n);
+
+@@ -824,10 +823,10 @@ static char *quote_for_pmake(const char *str)
+         switch (*p) {
+         case ' ':
+         case '\t':
+-            while (nbs--)
+-                *q++ = '\\';
++            q = mempset(q, '\\', nbs);
+             *q++ = '\\';
+             *q++ = *p;
++            nbs = 0;
+             break;
+         case '$':
+             *q++ = *p;
+@@ -849,9 +848,8 @@ static char *quote_for_pmake(const char *str)
+             break;
+         }
+     }
+-    while (nbs--)
+-        *q++ = '\\';
+
++    q = mempset(q, '\\', nbs);
+     *q = '\0';
+
+     return os;
+diff --git a/configure.ac b/configure.ac
+index 39680b1..940ebe2 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -199,6 +199,7 @@ AC_CHECK_FUNCS(strrchrnul)
+ AC_CHECK_FUNCS(iscntrl)
+ AC_CHECK_FUNCS(isascii)
+ AC_CHECK_FUNCS(mempcpy)
++AC_CHECK_FUNCS(mempset)
+
+ AC_CHECK_FUNCS(getuid)
+ AC_CHECK_FUNCS(getgid)
+diff --git a/include/compiler.h b/include/compiler.h
+index db3d6d6..b64da6a 100644
+--- a/include/compiler.h
++++ b/include/compiler.h
+@@ -256,6 +256,13 @@ static inline void *mempcpy(void *dst, const void *src, size_t n)
+ }
+ #endif
+
++#ifndef HAVE_MEMPSET
++static inline void *mempset(void *dst, int c, size_t n)
++{
++    return (char *)memset(dst, c, n) + n;
++}
++#endif
++
+ /*
+  * Hack to support external-linkage inline functions
+  */
+--
+2.40.0
diff --git a/meta/recipes-devtools/nasm/nasm_2.15.05.bb b/meta/recipes-devtools/nasm/nasm_2.15.05.bb
index edc17aeebf..59b1121bd4 100644
--- a/meta/recipes-devtools/nasm/nasm_2.15.05.bb
+++ b/meta/recipes-devtools/nasm/nasm_2.15.05.bb
@@ -8,6 +8,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=90904486f8fbf1861cf42752e1a39efe"
 SRC_URI = "http://www.nasm.us/pub/nasm/releasebuilds/${PV}/nasm-${PV}.tar.bz2 \
            file://0001-stdlib-Add-strlcat.patch \
            file://0002-Add-debug-prefix-map-option.patch \
+           file://CVE-2022-44370.patch \
            "
 
 SRC_URI[sha256sum] = "3c4b8339e5ab54b1bcb2316101f8985a5da50a3f9e504d43fa6f35668bee2fd0"