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>
47 lines
1.5 KiB
Diff
47 lines
1.5 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: Thu, 6 Feb 2025 18:16:56 +0000
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Subject: [PATCH] kern/partition: Add sanity check after grub_strtoul() call
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The current code incorrectly assumes that both the input and the values
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returned by grub_strtoul() are always valid which can lead to potential
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errors. This fix ensures proper validation to prevent any unintended issues.
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Fixes: CID 473843
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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/kern/partition.c | 12 ++++++++++--
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1 file changed, 10 insertions(+), 2 deletions(-)
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diff --git a/grub-core/kern/partition.c b/grub-core/kern/partition.c
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index f3f125e75..144a7b6a6 100644
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--- a/grub-core/kern/partition.c
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+++ b/grub-core/kern/partition.c
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@@ -125,14 +125,22 @@ grub_partition_probe (struct grub_disk *disk, const char *str)
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for (ptr = str; *ptr;)
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{
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grub_partition_map_t partmap;
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- int num;
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+ unsigned long num;
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const char *partname, *partname_end;
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partname = ptr;
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while (*ptr && grub_isalpha (*ptr))
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ptr++;
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partname_end = ptr;
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- num = grub_strtoul (ptr, &ptr, 0) - 1;
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+
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+ num = grub_strtoul (ptr, &ptr, 0);
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+ if (*ptr != '\0' || num == 0 || num > GRUB_INT_MAX)
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+ {
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+ grub_error (GRUB_ERR_BAD_NUMBER, N_("invalid partition number"));
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+ return 0;
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+ }
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+
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+ num -= 1;
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curpart = 0;
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/* Use the first partition map type found. */
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