From a709dd47bf9c22e893b3ac945ba245ad60a5ff3e Mon Sep 17 00:00:00 2001
From: Josh Megnauth <jo.sh@tutanota.com>
Date: Sat, 23 Nov 2024 19:53:33 +0000
Subject: [PATCH] fix: Multiplication overflow in setsockopt

---
 src/platform/redox/socket.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/platform/redox/socket.rs b/src/platform/redox/socket.rs
index 033b53dbf1..2698e2abfa 100644
--- a/src/platform/redox/socket.rs
+++ b/src/platform/redox/socket.rs
@@ -11,7 +11,7 @@ use crate::{
     error::{Errno, Result, ResultExt},
     header::{
         arpa_inet::inet_aton,
-        errno::{EAFNOSUPPORT, EFAULT, EINVAL, ENOSYS, EOPNOTSUPP, EPROTONOSUPPORT},
+        errno::{EAFNOSUPPORT, EDOM, EFAULT, EINVAL, ENOSYS, EOPNOTSUPP, EPROTONOSUPPORT},
         netinet_in::{in_addr, in_port_t, sockaddr_in},
         string::strnlen,
         sys_socket::{constants::*, msghdr, sa_family_t, sockaddr, socklen_t},
@@ -359,9 +359,13 @@ impl PalSocket for Sys {
 
             let fd = FdGuard::new(syscall::dup(socket as usize, timeout_name)?);
 
+            let Some(tv_nsec) = timeval.tv_usec.checked_mul(1000) else {
+                return Err(Errno(EDOM));
+            };
+
             let timespec = syscall::TimeSpec {
                 tv_sec: timeval.tv_sec as i64,
-                tv_nsec: timeval.tv_usec * 1000,
+                tv_nsec,
             };
 
             Self::write(*fd as c_int, &timespec)?;