From adafa841f73815607a36238c8089a4c0a7a1be40 Mon Sep 17 00:00:00 2001
From: John Reiser <jreiser@BitWagon.com>
Date: Fri, 24 Dec 2021 15:32:19 -0800
Subject: [PATCH] Some PT_LOAD must have (p_flags & PF_X)

https://github.com/upx/upx/issues/511
	modified:   p_lx_elf.cpp
---
 src/p_lx_elf.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
index 1e38ff30..e80ec077 100644
--- a/src/p_lx_elf.cpp
+++ b/src/p_lx_elf.cpp
@@ -2168,6 +2168,9 @@ bool PackLinuxElf32::canPack()
             }
             check_pt_load(phdr);
         }
+        if (!pload_x0) {
+            throwCantPack("No PT_LOAD has (p_flags & PF_X)");
+        }
         // elf_find_dynamic() returns 0 if 0==dynseg.
         dynstr=          (char const *)elf_find_dynamic(Elf32_Dyn::DT_STRTAB);
         dynsym=     (Elf32_Sym const *)elf_find_dynamic(Elf32_Dyn::DT_SYMTAB);
@@ -2563,6 +2566,9 @@ PackLinuxElf64::canPack()
             }
             check_pt_load(phdr);
         }
+        if (!pload_x0) {
+            throwCantPack("No PT_LOAD has (p_flags & PF_X)");
+        }
         // elf_find_dynamic() returns 0 if 0==dynseg.
         dynstr=          (char const *)elf_find_dynamic(Elf64_Dyn::DT_STRTAB);
         dynsym=     (Elf64_Sym const *)elf_find_dynamic(Elf64_Dyn::DT_SYMTAB);