From 4df58c515529e57f33727c9cbb8055ec191cd167 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Thu, 9 Jul 2026 23:39:13 +0300
Subject: [PATCH] Kernel: Check for overflow in seek syscall

---
 kernel/kernel/OpenFileDescriptorSet.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/kernel/OpenFileDescriptorSet.cpp b/kernel/kernel/OpenFileDescriptorSet.cpp
index b414c71f..78792bf8 100644
--- a/kernel/kernel/OpenFileDescriptorSet.cpp
+++ b/kernel/kernel/OpenFileDescriptorSet.cpp
@@ -376,6 +376,9 @@ namespace Kernel
 				return BAN::Error::from_errno(EINVAL);
 		}
 
+		if (BAN::Math::will_addition_overflow(base_offset, offset))
+			return BAN::Error::from_errno(EOVERFLOW);
+
 		const off_t new_offset = base_offset + offset;
 		if (new_offset < 0)
 			return BAN::Error::from_errno(EINVAL);