1855ad5881
* 0001-fs-xfs-Add-new-superblock-features-added-in-Linux-6..patch * 0002-fs-xfs-Fix-grub_xfs_iterate_dir-return-value-in-case.patch - Fix "attempt to read of write outside of partition" error message (bsc#1237844) * 0003-fs-xfs-fix-large-extent-counters-incompat-feature-su.patch OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=531
86 lines
3.0 KiB
Diff
86 lines
3.0 KiB
Diff
From 53a0f0ebe569a846de22085c654ea4fbdfb6a154 Mon Sep 17 00:00:00 2001
|
|
From: Lidong Chen <lidong.chen@oracle.com>
|
|
Date: Tue, 21 Jan 2025 19:02:37 +0000
|
|
Subject: [PATCH 20/20] fs: Prevent overflows when allocating memory for arrays
|
|
|
|
Use grub_calloc() when allocating memory for arrays to ensure proper
|
|
overflow checks are in place.
|
|
|
|
The HFS+ and squash4 security vulnerabilities were reported by
|
|
Jonathan Bar Or <jonathanbaror@gmail.com>.
|
|
|
|
Fixes: CVE-2025-0678
|
|
Fixes: CVE-2025-1125
|
|
|
|
Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
|
|
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
|
|
---
|
|
grub-core/fs/btrfs.c | 4 ++--
|
|
grub-core/fs/hfspluscomp.c | 9 +++++++--
|
|
grub-core/fs/squash4.c | 8 ++++----
|
|
3 files changed, 13 insertions(+), 8 deletions(-)
|
|
|
|
diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
|
|
index 0dd9a817ee..8d0147dac1 100644
|
|
--- a/grub-core/fs/btrfs.c
|
|
+++ b/grub-core/fs/btrfs.c
|
|
@@ -1409,8 +1409,8 @@ grub_btrfs_mount (grub_device_t dev)
|
|
}
|
|
|
|
data->n_devices_allocated = 16;
|
|
- data->devices_attached = grub_malloc (sizeof (data->devices_attached[0])
|
|
- * data->n_devices_allocated);
|
|
+ data->devices_attached = grub_calloc (data->n_devices_allocated,
|
|
+ sizeof (data->devices_attached[0]));
|
|
if (!data->devices_attached)
|
|
{
|
|
grub_free (data);
|
|
diff --git a/grub-core/fs/hfspluscomp.c b/grub-core/fs/hfspluscomp.c
|
|
index 48ae438d85..a80954ee61 100644
|
|
--- a/grub-core/fs/hfspluscomp.c
|
|
+++ b/grub-core/fs/hfspluscomp.c
|
|
@@ -244,14 +244,19 @@ hfsplus_open_compressed_real (struct grub_hfsplus_file *node)
|
|
return 0;
|
|
}
|
|
node->compress_index_size = grub_le_to_cpu32 (index_size);
|
|
- node->compress_index = grub_malloc (node->compress_index_size
|
|
- * sizeof (node->compress_index[0]));
|
|
+ node->compress_index = grub_calloc (node->compress_index_size,
|
|
+ sizeof (node->compress_index[0]));
|
|
if (!node->compress_index)
|
|
{
|
|
node->compressed = 0;
|
|
grub_free (attr_node);
|
|
return grub_errno;
|
|
}
|
|
+
|
|
+ /*
|
|
+ * The node->compress_index_size * sizeof (node->compress_index[0]) is safe here
|
|
+ * due to relevant checks done in grub_calloc() above.
|
|
+ */
|
|
if (grub_hfsplus_read_file (node, 0, 0,
|
|
0x104 + sizeof (index_size),
|
|
node->compress_index_size
|
|
diff --git a/grub-core/fs/squash4.c b/grub-core/fs/squash4.c
|
|
index 6e9d63874c..77aa4fbf3a 100644
|
|
--- a/grub-core/fs/squash4.c
|
|
+++ b/grub-core/fs/squash4.c
|
|
@@ -816,10 +816,10 @@ direct_read (struct grub_squash_data *data,
|
|
break;
|
|
}
|
|
total_blocks = ((total_size + data->blksz - 1) >> data->log2_blksz);
|
|
- ino->block_sizes = grub_malloc (total_blocks
|
|
- * sizeof (ino->block_sizes[0]));
|
|
- ino->cumulated_block_sizes = grub_malloc (total_blocks
|
|
- * sizeof (ino->cumulated_block_sizes[0]));
|
|
+ ino->block_sizes = grub_calloc (total_blocks,
|
|
+ sizeof (ino->block_sizes[0]));
|
|
+ ino->cumulated_block_sizes = grub_calloc (total_blocks,
|
|
+ sizeof (ino->cumulated_block_sizes[0]));
|
|
if (!ino->block_sizes || !ino->cumulated_block_sizes)
|
|
{
|
|
grub_free (ino->block_sizes);
|
|
--
|
|
2.48.1
|
|
|