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
1.1 KiB
Diff
33 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: B Horn <b@horn.uk>
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Date: Sun, 12 May 2024 03:01:40 +0100
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Subject: [PATCH] kern/file: Ensure file->data is set
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This is to avoid a generic issue were some filesystems would not set
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data and also not set a grub_errno. This meant it was possible for many
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filesystems to grub_dl_unref() themselves multiple times resulting in
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it being possible to unload the filesystems while there were still
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references to them, e.g., via a loopback.
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Reported-by: B Horn <b@horn.uk>
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Signed-off-by: B Horn <b@horn.uk>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/kern/file.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/grub-core/kern/file.c b/grub-core/kern/file.c
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index 868ce3b63..1dc4339dc 100644
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--- a/grub-core/kern/file.c
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+++ b/grub-core/kern/file.c
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@@ -124,6 +124,9 @@ grub_file_open (const char *name, enum grub_file_type type)
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if ((file->fs->fs_open) (file, file_name) != GRUB_ERR_NONE)
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goto fail;
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+ if (file->data == NULL)
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+ goto fail;
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+
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file->name = grub_strdup (name);
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grub_errno = GRUB_ERR_NONE;
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