Fix out-of-bounds pointer arithmetic in CMSG_NXTHDR

rust-lang · May 1, 2024 · dc88f4c · dc88f4c
1 parent 3939453
commit dc88f4c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
@@ -4650,7 +4650,7 @@ f! {
             as *mut cmsghdr;
         let max = (*mhdr).msg_control as usize
             + (*mhdr).msg_controllen as usize;
-        if (next.offset(1)) as usize > max ||
+        if (next.wrapping_offset(1)) as usize > max ||
             next as usize + super::CMSG_ALIGN((*next).cmsg_len as usize) > max
         {
             0 as *mut cmsghdr