ncurses: Fix for CVE-2021-39537

Add patch to fix CVE-2021-39537
Link: http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/ncurses/patches/Attic/patch-ncurses_tinfo_captoinfo.c?rev=1.1&content-type=text/x-cvsweb-markup

(From OE-Core rev: abe9e7aec3b3363927eed014775145c55710fa07)

Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
Signed-off-by: Ranjitsinh Rathod <ranjitsinhrathod1991@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 31 insertions, 0 deletions

diff --git a/meta/recipes-core/ncurses/files/CVE-2021-39537.patch b/meta/recipes-core/ncurses/files/CVE-2021-39537.patch
new file mode 100644
index 0000000000..7655200350
--- /dev/null
+++ b/meta/recipes-core/ncurses/files/CVE-2021-39537.patch
@@ -0,0 +1,30 @@
+$NetBSD: patch-ncurses_tinfo_captoinfo.c,v 1.1 2021/10/09 07:52:36 wiz Exp $
+
+Fix for CVE-2021-39537 from upstream:
+https://github.com/ThomasDickey/ncurses-snapshots/commit/63ca9e061f4644795d6f3f559557f3e1ed8c738b#diff-7e95c7bc5f213e9be438e69a9d5d0f261a14952bcbd692f7b9014217b8047340
+
+CVE: CVE-2021-39537
+Upstream-Status: Backport [http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/ncurses/patches/Attic/patch-ncurses_tinfo_captoinfo.c?rev=1.1&content-type=text/x-cvsweb-markup]
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+--- a/ncurses/tinfo/captoinfo.c 2020-02-02 23:34:34.000000000 +0000
++++ b/ncurses/tinfo/captoinfo.c
+@@ -216,12 +216,15 @@ cvtchar(register const char *sp)
+        }
+        break;
+     case '^':
++       len = 2;
+        c = UChar(*++sp);
+-       if (c == '?')
++        if (c == '?') {
+            c = 127;
+-       else
++        } else if (c == '\0') {
++            len = 1;
++        } else {
+            c &= 0x1f;
+-       len = 2;
++       }
+        break;
+     default:
+        c = UChar(*sp);
diff --git a/meta/recipes-core/ncurses/ncurses_6.2.bb b/meta/recipes-core/ncurses/ncurses_6.2.bb
index 76f0cf97f4..700464f70b 100644
--- a/meta/recipes-core/ncurses/ncurses_6.2.bb
+++ b/meta/recipes-core/ncurses/ncurses_6.2.bb
@@ -3,6 +3,7 @@ require ncurses.inc
 SRC_URI += "file://0001-tic-hang.patch \
            file://0002-configure-reproducible.patch \
            file://0003-gen-pkgconfig.in-Do-not-include-LDFLAGS-in-generated.patch \
+           file://CVE-2021-39537.patch \
            "
 # commit id corresponds to the revision in package version
 SRCREV = "a669013cd5e9d6434e5301348ea51baf306c93c4"