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>
44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Michael Chang <mchang@suse.com>
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Date: Fri, 31 May 2024 15:14:57 +0800
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Subject: [PATCH] fs/xfs: Fix out-of-bounds read
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The number of records in the root key array read from disk was not being
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validated against the size of the root node. This could lead to an
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out-of-bounds read.
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This patch adds a check to ensure that the number of records in the root
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key array does not exceed the expected size of a root node read from
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disk. If this check detects an out-of-bounds condition the operation is
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aborted to prevent random errors due to metadata corruption.
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Reported-by: Daniel Axtens <dja@axtens.net>
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Signed-off-by: Michael Chang <mchang@suse.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/fs/xfs.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
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index e3816d1ec..43be00e99 100644
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--- a/grub-core/fs/xfs.c
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+++ b/grub-core/fs/xfs.c
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@@ -568,6 +568,17 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
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do
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{
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int i;
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+ grub_addr_t keys_end, data_end;
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+
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+ if (grub_mul (sizeof (grub_uint64_t), nrec, &keys_end) ||
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+ grub_add ((grub_addr_t) keys, keys_end, &keys_end) ||
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+ grub_add ((grub_addr_t) node->data, node->data->data_size, &data_end) ||
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+ keys_end > data_end)
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+ {
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+ grub_error (GRUB_ERR_BAD_FS, "invalid number of XFS root keys");
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+ grub_free (leaf);
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+ return 0;
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+ }
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for (i = 0; i < nrec; i++)
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{
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