6eaa34fe07
- Resolves: CVE-2024-45779 CVE-2024-45778 CVE-2025-1118 - Resolves: CVE-2025-0677 CVE-2024-45782 CVE-2025-0690 - Resolves: CVE-2024-45783 CVE-2025-0624 CVE-2024-45776 - Resolves: CVE-2025-0622 CVE-2024-45774 CVE-2024-45775 - Resolves: CVE-2024-45781 CVE-2024-45780 - Resolves: #RHEL-79700 - Resolves: #RHEL-79341 - Resolves: #RHEL-79875 - Resolves: #RHEL-79849 - Resolves: #RHEL-79707 - Resolves: #RHEL-79857 - Resolves: #RHEL-79709 - Resolves: #RHEL-79846 - Resolves: #RHEL-75737 - Resolves: #RHEL-79713 - Resolves: #RHEL-73785 - Resolves: #RHEL-73787 - Resolves: #RHEL-79704 - Resolves: #RHEL-79702 Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
33 lines
1.0 KiB
Diff
33 lines
1.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Lidong Chen <lidong.chen@oracle.com>
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Date: Wed, 29 Jan 2025 06:48:37 +0000
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Subject: [PATCH] script/execute: Fix potential underflow and NULL dereference
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The result is initialized to 0 in grub_script_arglist_to_argv().
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If the for loop condition is not met both result.args and result.argc
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remain 0 causing result.argc - 1 to underflow and/or result.args NULL
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dereference. Fix the issues by adding relevant checks.
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Fixes: CID 473880
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Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/script/execute.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/grub-core/script/execute.c b/grub-core/script/execute.c
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index c383eb87c..89fdaa101 100644
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--- a/grub-core/script/execute.c
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+++ b/grub-core/script/execute.c
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@@ -794,6 +794,9 @@ cleanup:
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}
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}
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+ if (result.args == NULL || result.argc == 0)
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+ goto fail;
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+
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if (! result.args[result.argc - 1])
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result.argc--;
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