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Prevent an abort in the bfd linker when attempting to generate dynamic relocs for a corrupt input file. PR 32638 Backport a patch from upstream to fix CVE-2025-1178 Upstream-Status: Backport from [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=75086e9de1707281172cc77f178e7949a4414ed0] (From OE-Core rev: f58f174daa7e30baa18abe4db9eda9c1b1c425cc) Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com> Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From 75086e9de1707281172cc77f178e7949a4414ed0 Mon Sep 17 00:00:00 2001
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From: Nick Clifton <nickc@redhat.com>
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Date: Wed, 5 Feb 2025 13:26:51 +0000
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Subject: [PATCH] Prevent an abort in the bfd linker when attempting to
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generate dynamic relocs for a corrupt input file.
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PR 32638
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Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=75086e9de1707281172cc77f178e7949a4414ed0]
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CVE: CVE-2025-1178
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Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
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diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
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index cb32732e..a08e9c97 100644
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--- a/bfd/elf64-x86-64.c
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+++ b/bfd/elf64-x86-64.c
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@@ -5031,6 +5031,15 @@ elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
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if (generate_dynamic_reloc)
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{
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+ /* If the relgot section has not been created, then
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+ generate an error instead of a reloc. cf PR 32638. */
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+ if (relgot == NULL || relgot->size == 0)
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+ {
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+ info->callbacks->einfo (_("%F%pB: Unable to generate dynamic relocs because a suitable section does not exist\n"),
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+ output_bfd);
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+ return false;
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+ }
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+
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if (relative_reloc_name != NULL
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&& htab->params->report_relative_reloc)
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_bfd_x86_elf_link_report_relative_reloc
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