GitHub Advisoryadvisory · crates.io

GHSA-p9m5-3hj7-cp5r futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer

MEDIUM Published 2022-05-24 Modified 2023-06-13 Official page ↗
Aliases
CVE-2020-35907
Ecosystem
crates.io
Packages
futures-task
Severity
Moderate
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476
Reviewed
2022-06-16

Affected packages

• crates.io futures-task: < 0.3.5 → fixed in 0.3.5

Description

Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread. This resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn't accessible from the main thread.

Related

Alias · CVE (1)

  • CVE-2020-35907 An issue was discovered in the futures-task crate before 0.3.5 for Rust. vulnerability

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References