This project might be open to known security vulnerabilities, which can be prevented by tightening the version range of affected dependencies. Find detailed information at the bottom.

Crate libp2p-mplex

Dependencies

(10 total, 5 outdated, 2 possibly insecure)

CrateRequiredLatestStatus
 asynchronous-codec^0.60.7.0out of date
 bytes ⚠️^11.11.1maybe insecure
 futures^0.3.10.3.32up to date
 libp2p-core ⚠️^0.30.00.43.2out of date
 log^0.40.4.29up to date
 nohash-hasher^0.20.2.0up to date
 parking_lot^0.110.12.5out of date
 rand^0.70.10.1out of date
 smallvec^1.6.11.15.1up to date
 unsigned-varint^0.70.8.0out of date

Dev dependencies

(6 total, 4 outdated)

CrateRequiredLatestStatus
 async-std^1.7.01.13.2up to date
 criterion^0.30.8.2out of date
 env_logger^0.90.11.10out of date
 futures^0.30.3.32up to date
 quickcheck^0.91.1.0out of date
 rand^0.70.10.1out of date

Security Vulnerabilities

libp2p-core: Failure to verify the public key of a `SignedEnvelope` against the `PeerId` in a `PeerRecord`

RUSTSEC-2022-0009

Affected versions of this crate did not check that the public key the signature was created with matches the peer ID of the peer record. Any combination was considered valid.

This allows an attacker to republish an existing PeerRecord with a different PeerId.

bytes: Integer overflow in `BytesMut::reserve`

RUSTSEC-2026-0007

In the unique reclaim path of BytesMut::reserve, the condition

if v_capacity >= new_cap + offset

uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB.

This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks.

PoC

use bytes::*;

fn main() {
    let mut a = BytesMut::from(&b"hello world"[..]);
    let mut b = a.split_off(5);

    // Ensure b becomes the unique owner of the backing storage
    drop(a);

    // Trigger overflow in new_cap + offset inside reserve
    b.reserve(usize::MAX - 6);

    // This call relies on the corrupted cap and may cause UB & HBO
    b.put_u8(b'h');
}

Workarounds

Users of BytesMut::reserve are only affected if integer overflow checks are configured to wrap. When integer overflow is configured to panic, this issue does not apply.