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kernel: Properly check memory bounds in strdup_from_user()
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Missed this one in 097353e779.
This commit is contained in:
apio 2023-08-08 10:27:19 +02:00
parent 2e63b93e48
commit 7c254e5e15
Signed by: apio
GPG Key ID: B8A7D06E42258954
1 changed files with 1 additions and 1 deletions
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kernel/src/memory/MemoryManager.cpp
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@ -508,7 +508,7 @@ namespace MemoryManager
{ {
TRY(result.try_append(*(char*)address)); TRY(result.try_append(*(char*)address));
address++; address++;
if (address % ARCH_PAGE_SIZE) if ((address % ARCH_PAGE_SIZE) == 0)
{ {
if (!validate_page_access(address, MMU::User)) return err(EFAULT); if (!validate_page_access(address, MMU::User)) return err(EFAULT);
} }