CVE-2025-4574 – crossbeam-channel

Package

Manager: cargo
Name: crossbeam-channel
Vulnerable Version: >=0.5.11 <0.5.15

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:R

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00055 pctl0.17175

Details

crossbeam-channel Vulnerable to Double Free on Drop The internal `Channel` type's `Drop` method has a race which could, in some circumstances, lead to a double-free. This could result in memory corruption. Quoting from the [upstream description in merge request \#1187](https://github.com/crossbeam-rs/crossbeam/pull/1187#issue-2980761131): > The problem lies in the fact that `dicard_all_messages` contained two paths that could lead to `head.block` being read but only one of them would swap the value. This meant that `dicard_all_messages` could end up observing a non-null block pointer (and therefore attempting to free it) without setting `head.block` to null. This would then lead to `Channel::drop` making a second attempt at dropping the same pointer. The bug was introduced while fixing a memory leak, in upstream [MR \#1084](https://github.com/crossbeam-rs/crossbeam/pull/1084), first published in 0.5.12. The fix is in upstream [MR \#1187](https://github.com/crossbeam-rs/crossbeam/pull/1187) and has been published in 0.5.15

Metadata

Created: 2025-04-10T14:30:39Z
Modified: 2025-05-15T18:26:52Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-pg9f-39pc-qf8g/GHSA-pg9f-39pc-qf8g.json
CWE IDs: ["CWE-415"]
Alternative ID: GHSA-pg9f-39pc-qf8g
Finding: F138
Auto approve: 1