diff --git a/src/cmd/ksh93/sh/lex.c b/src/cmd/ksh93/sh/lex.c
index b9e7ef480..d5baf5d0a 100644
--- a/src/cmd/ksh93/sh/lex.c
+++ b/src/cmd/ksh93/sh/lex.c
@@ -2445,7 +2445,7 @@ static int alias_exceptf(Sfio_t *iop,int type,Sfdisc_t *handle)
 			if(dp!=handle)
 				sfdisc(iop,dp);
 		}
-		else if(type==SF_FINAL)
+		else if(type==SF_DPOP || type==SF_FINAL)
 			free((void*)ap);
 		goto done;
 	}
diff --git a/src/cmd/ksh93/sh/macro.c b/src/cmd/ksh93/sh/macro.c
index 5605a21bc..7af9ca1dc 100644
--- a/src/cmd/ksh93/sh/macro.c
+++ b/src/cmd/ksh93/sh/macro.c
@@ -2110,6 +2110,7 @@ static void comsubst(Mac_t *mp,register Shnode_t* t, int type)
 			}
 			sfputc(stkp,c);
 		}
+		sfputc(stkp,' '); /* rhbz#982142: a=`some_alias` leaked memory, a=`some_alias ` did not! TODO: non-hack fix */
 		c = stktell(stkp);
 		str=stkfreeze(stkp,1);
 		/* disable verbose and don't save in history file */
diff --git a/src/cmd/ksh93/sh/path.c b/src/cmd/ksh93/sh/path.c
index 7137ebab2..032871479 100644
--- a/src/cmd/ksh93/sh/path.c
+++ b/src/cmd/ksh93/sh/path.c
@@ -612,6 +612,7 @@ static void funload(Shell_t *shp,int fno, const char *name)
 		}
 		while((rp=dtnext(shp->fpathdict,rp)) && strcmp(pname,rp->fname)==0);
 		sh_close(fno);
+		free((void*)pname);
 		return;
 	}
 	sh_onstate(SH_NOLOG);
diff --git a/src/cmd/ksh93/tests/leaks.sh b/src/cmd/ksh93/tests/leaks.sh
index b29b07355..40d815ccd 100755
--- a/src/cmd/ksh93/tests/leaks.sh
+++ b/src/cmd/ksh93/tests/leaks.sh
@@ -270,5 +270,45 @@ done
 after=$(getmem)
 err_exit_if_leak 'unalias'
 
+# ======
+# Red Hat bug rhbz#982142: command substitution leaks
+
+# case1: Nested command substitutions
+# (reportedly already fixed in 93u+, but let's keep the test)
+before=$(getmem)
+for ((i=0; i < N; i++))
+do	a=`true 1 + \`true 1 + 1\``	# was: a=`expr 1 + \`expr 1 + 1\``
+done
+after=$(getmem)
+err_exit_if_leak 'nested command substitutions'
+
+# case2: Command alias
+alias ls='true -ltr'			# was: alias ls='ls -ltr'
+before=$(getmem)
+for ((i=0; i < N; i++))
+do	eval 'a=`ls`'
+done
+after=$(getmem)
+unalias ls
+err_exit_if_leak 'alias in command substitution'
+
+# case3: Function call via autoload
+cat >$tmp/func1 <<\EOF
+function func1
+{
+    echo "func1 call";
+}
+EOF
+FPATH=$tmp
+autoload func1
+before=$(getmem)
+for ((i=0; i < N; i++))
+do	a=`func1`
+done
+after=$(getmem)
+unset -f func1
+unset -v FPATH
+err_exit_if_leak 'function call via autoload in command substitution'
+
 # ======
 exit $((Errors<125?Errors:125))