grub2/0267-Set-non-executable-stack-sections-on-EFI-assembly-fi.patch
Leo Sandoval 5c315b462c Remove 'efi: Use shim's loader protocol for EFI image verification'
Although this patch is correct and at some point it will be
re-introduced, currently shim does not support the loader protocol so
drop it in the meanwhile.

Signed-off-by: Leo Sandoval <lsandova@redhat.com>
2024-08-06 14:30:42 -06:00

47 lines
2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Leo Sandoval <lsandova@redhat.com>
Date: Mon, 5 Aug 2024 13:19:28 -0600
Subject: [PATCH] Set non-executable stack sections on EFI assembly files
For those manual assembly files created where no '.note.GNU-stack'
section is explicitly added, linker defaults it as executable and this
is the reason that RHEL CI rpminspect & annocheck tests are
failing. The proposed change sets the corresponding GNU-stack
sections otherwise CI detects the following security vulnerability
$ annocheck annocheck --ignore-unknown --verbose --profile=el9 *.rpm 2>&1 | grep FAIL | grep stack
(standard input):(standard input):Hardened: ./usr/lib/grub/x86_64-efi/kernel.exec: FAIL: gnu-stack test because .note.GNU-stack section has execute permission
(standard input):(standard input):Hardened: ./usr/lib/grub/x86_64-efi/kernel.img: FAIL: gnu-stack test because .note.GNU-stack section has execute permission
Signed-off-by: Leo Sandoval <lsandova@redhat.com>
---
grub-core/kern/i386/efi/startup.S | 5 +++++
grub-core/kern/x86_64/efi/startup.S | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/grub-core/kern/i386/efi/startup.S b/grub-core/kern/i386/efi/startup.S
index fc5ea3dac..36d1b1a68 100644
--- a/grub-core/kern/i386/efi/startup.S
+++ b/grub-core/kern/i386/efi/startup.S
@@ -34,3 +34,8 @@ _start:
movl %eax, EXT_C(grub_efi_system_table)
call EXT_C(grub_main)
ret
+
+/* An executable stack is not required for these functions. */
+#if defined (__linux__) && defined (__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
diff --git a/grub-core/kern/x86_64/efi/startup.S b/grub-core/kern/x86_64/efi/startup.S
index 9357e5c5d..f5c6bc3d8 100644
--- a/grub-core/kern/x86_64/efi/startup.S
+++ b/grub-core/kern/x86_64/efi/startup.S
@@ -33,3 +33,8 @@ _start:
andq $~0xf, %rsp
call EXT_C(grub_main)
/* Doesn't return. */
+
+/* An executable stack is not required for these functions. */
+#if defined (__linux__) && defined (__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif