bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Add integer overflow check

Browse source
This commit is contained in:
LinkTed 2020-08-25 18:38:25 +02:00
parent e1084052a7
commit 3dfab6fb64
1 changed files with 9 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

10
library/std/src/sys/unix/ext/net/ancillary.rs
View file

@ -72,7 +72,15 @@ fn add_to_ancillary_data<T: Clone>(
cmsg_level: libc::c_int, cmsg_level: libc::c_int,
cmsg_type: libc::c_int, cmsg_type: libc::c_int,
) -> bool { ) -> bool {
let len = (source.len() * size_of::<T>()) as u32; let len = if let Some(len) = source.len().checked_mul(size_of::<T>()) {
if let Ok(len) = u32::try_from(len) {
len
} else {
return false;
}
} else {
return false;
};
unsafe { unsafe {
let additional_space = libc::CMSG_SPACE(len) as usize; let additional_space = libc::CMSG_SPACE(len) as usize;