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src/apfs_common.c: avoid integer overflow when checking block count.

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This commit is contained in:
Christophe Grenier 2023-02-19 09:14:47 +01:00
parent f13286f198
commit 97f7083ba8
1 changed files with 1 additions and 1 deletions
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src/apfs_common.c
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@ -74,7 +74,7 @@ int test_APFS(const nx_superblock_t *sb, const partition_t *partition)
{ {
if(le32(sb->nx_magic)!=0x4253584e) if(le32(sb->nx_magic)!=0x4253584e)
return 1; return 1;
if(le32(sb->nx_xp_desc_blocks) + le32(sb->nx_xp_data_blocks) > le64(sb->nx_block_count)) if((uint64_t)le32(sb->nx_xp_desc_blocks) + le32(sb->nx_xp_data_blocks) > le64(sb->nx_block_count))
return 2; return 2;
if(le32(sb->nx_block_size) < NX_MINIMUM_BLOCK_SIZE || if(le32(sb->nx_block_size) < NX_MINIMUM_BLOCK_SIZE ||
le32(sb->nx_block_size) > NX_MAXIMUM_BLOCK_SIZE) le32(sb->nx_block_size) > NX_MAXIMUM_BLOCK_SIZE)