58 lines
2.0 KiB
Diff
58 lines
2.0 KiB
Diff
commit c64e39c69a9a7ee32c00b0cf7918f6274a565544
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Author: Greg Hudson <ghudson@mit.edu>
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Date: Fri Jan 3 13:50:48 2014 -0500
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Mark AESNI files as not needing executable stacks
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Some Linux systems now come with facilities to mark the stack as
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non-executable, making it more difficult to exploit buffer overrun
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bugs. For this to work, object files built from assembly need a
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section added to note whether they require an executable stack.
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Patch from Dhiru Kholia with comments added. More information at:
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https://bugzilla.redhat.com/show_bug.cgi?id=1045699
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https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart
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ticket: 7813
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target_version: 1.12.1
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tags: pullup
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diff --git a/src/lib/crypto/builtin/aes/iaesx64.s b/src/lib/crypto/builtin/aes/iaesx64.s
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index 1c091c1..d03c859 100644
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--- a/src/lib/crypto/builtin/aes/iaesx64.s
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+++ b/src/lib/crypto/builtin/aes/iaesx64.s
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@@ -834,3 +834,14 @@ lp256encsingle_CBC:
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movdqu [r9],xmm1
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add rsp,16*16+8
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ret
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+
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+; Mark this file as not needing an executable stack.
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+%ifidn __OUTPUT_FORMAT__,elf
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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+%ifidn __OUTPUT_FORMAT__,elf32
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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+%ifidn __OUTPUT_FORMAT__,elf64
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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diff --git a/src/lib/crypto/builtin/aes/iaesx86.s b/src/lib/crypto/builtin/aes/iaesx86.s
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index b667acd..1aa12e6 100644
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--- a/src/lib/crypto/builtin/aes/iaesx86.s
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+++ b/src/lib/crypto/builtin/aes/iaesx86.s
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@@ -871,3 +871,14 @@ lp256encsingle_CBC:
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movdqu [ecx],xmm1 ; store last iv for chaining
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ret
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+
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+; Mark this file as not needing an executable stack.
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+%ifidn __OUTPUT_FORMAT__,elf
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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+%ifidn __OUTPUT_FORMAT__,elf32
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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+%ifidn __OUTPUT_FORMAT__,elf64
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+section .note.GNU-stack noalloc noexec nowrite progbits
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+%endif
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