diff --git a/ksh.spec b/ksh.spec
index 5c00740..1f35091 100644
--- a/ksh.spec
+++ b/ksh.spec
@@ -6,7 +6,7 @@ Summary:      The Original ATT Korn Shell
 URL:          http://www.kornshell.com/
 License:      EPL
 Version:      %{releasedate}
-Release:      257%{?dist}
+Release:      258%{?dist}
 Source0:      http://www.research.att.com/~gsf/download/tgz/ast-ksh.%{release_date}.tgz
 Source1:      http://www.research.att.com/~gsf/download/tgz/INIT.%{release_date}.tgz
 Source2:      kshcomp.conf
@@ -264,8 +264,9 @@ sed -i '/-c sh\/main.c/s|${mam_cc_FLAGS} |${mam_cc_FLAGS} ${CCFLAGS} |p' src/cmd
 sed -i 1i"#define register" src/lib/libast/include/ast.h
 
 %build
+# rhbz#2226653: -D_std_malloc (disable vmalloc and force use of the operating system's malloc)
 XTRAFLAGS=""
-for f in -Wno-unknown-pragmas -Wno-missing-braces -Wno-unused-result -Wno-return-type -Wno-int-to-pointer-cast -Wno-parentheses -Wno-unused -Wno-unused-but-set-variable -Wno-cpp -P
+for f in -D_std_malloc -Wno-unknown-pragmas -Wno-missing-braces -Wno-unused-result -Wno-return-type -Wno-int-to-pointer-cast -Wno-parentheses -Wno-unused -Wno-unused-but-set-variable -Wno-cpp -P
 do
   gcc $f -E - </dev/null >/dev/null 2>&1 && XTRAFLAGS="$XTRAFLAGS $f"
 done
@@ -384,6 +385,10 @@ fi
 %config(noreplace) %{_sysconfdir}/binfmt.d/kshcomp.conf
 
 %changelog
+* Wed Jul 26 2023 Vincent Mihalkovic <vmihalko@redhat.com> - 20120801-258
+- disable vmalloc and force use of the operating system's malloc
+  Resolves: #2226653
+
 * Mon Aug 08 2022 Vincent Mihalkovic <vmihalko@redhat.com> - 20120801-257
 - Stack robustness fixes (two patches)
   Resolves: #2116372