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Date: Wed, 23 Feb 2022 21:40:11 -0800
From: Kees Cook <keescook@...omium.org>
To: Eric Biederman <ebiederm@...ssion.com>
Cc: Kees Cook <keescook@...omium.org>,
Peter Collingbourne <pcc@...gle.com>,
Catalin Marinas <catalin.marinas@....com>,
Dave Martin <Dave.Martin@....com>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-hardening@...r.kernel.org
Subject: [PATCH] ELF: Properly redefine PT_GNU_* in terms of PT_LOOS
The PT_GNU_* program header types are actually offsets from PT_LOOS,
so redefine them as such, reorder them, and add the missing PT_GNU_RELRO.
Cc: Eric Biederman <ebiederm@...ssion.com>
Cc: Peter Collingbourne <pcc@...gle.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Dave Martin <Dave.Martin@....com>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
include/uapi/linux/elf.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 61bf4774b8f2..6438d55529bf 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -35,10 +35,11 @@ typedef __s64 Elf64_Sxword;
#define PT_HIOS 0x6fffffff /* OS-specific */
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
-#define PT_GNU_EH_FRAME 0x6474e550
-#define PT_GNU_PROPERTY 0x6474e553
-
+#define PT_GNU_EH_FRAME (PT_LOOS + 0x474e550)
#define PT_GNU_STACK (PT_LOOS + 0x474e551)
+#define PT_GNU_RELRO (PT_LOOS + 0x474e552)
+#define PT_GNU_PROPERTY (PT_LOOS + 0x474e553)
+
/*
* Extended Numbering
--
2.30.2
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