From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Fri, 29 Apr 2022 13:02:17 +0000 (+0100)
Subject: aarch64: elf: avoid loading incompatible binaries
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73d195966deacbd30a7c62ad922b66dfba804ccc;p=thirdparty%2Fglibc.git

aarch64: elf: avoid loading incompatible binaries

Prevent lp64 ld.so loading purecap binaries.
---

diff --git a/sysdeps/aarch64/dl-machine.h b/sysdeps/aarch64/dl-machine.h
index ae8b14425a6..f31695aff1e 100644
--- a/sysdeps/aarch64/dl-machine.h
+++ b/sysdeps/aarch64/dl-machine.h
@@ -36,7 +36,8 @@
 static inline int __attribute__ ((unused))
 elf_machine_matches_host (const ElfW(Ehdr) *ehdr)
 {
-  return ehdr->e_machine == EM_AARCH64;
+  return ehdr->e_machine == EM_AARCH64
+	 && (ehdr->e_flags & EF_AARCH64_CHERI_PURECAP) == 0;
 }
 
 /* Return the run-time load address of the shared object.  */