CVE-2020-35924
Data races in try-mutex
An issue was discovered in the try-mutex crate before 0.3.0 for Rust. TryMutex<T> allows cross-thread sending of a non-Send type.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the try-mutex crate before 0.3.0 for Rust. TryMutex<T> allows cross-thread sending of a non-Send type.
- Record
CVE-2020-35924- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the try-mutex crate before 0.3.0 for Rust. TryMutex<T> allows cross-thread sending of a non-Send type.
- Record
CVE-2020-35924- Updated
- 2026-11-02
EUVDEUVD-2021-1589 No score
An issue was discovered in the try-mutex crate before 0.3.0 for Rust. TryMutex<T> allows cross-thread sending of a non-Send type.
- Record
EUVD-2021-1589- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-64j8-7gp2-xjx5
Data races in try-mutex
Affected versions of this crate unconditionally implemented Sync trait for TryMutex<T> type. This allows users to put non-Send T type in TryMutex and send it to another thread, which can cause a data race. The flaw was corrected in the 0.3.0 release by adding T: Send bound for the Sync trait implementation.
- Record
GHSA-64j8-7gp2-xjx5- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVGHSA-64j8-7gp2-xjx5
Data races in try-mutex
Affected versions of this crate unconditionally implemented Sync trait for TryMutex<T> type. This allows users to put non-Send T type in TryMutex and send it to another thread, which can cause a data race. The flaw was corrected in the 0.3.0 release by adding T: Send bound for the Sync trait implementation.
- Record
GHSA-64j8-7gp2-xjx5- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVRUSTSEC-2020-0087
TryMutex<T> allows sending non-Send type across threads
Affected versions of this crate unconditionally implemented Sync trait for TryMutex<T> type.
This allows users to put non-Send T type in TryMutex and send it to another thread, which can cause a data race.
The flaw was corrected in the 0.3.0 release by adding T: Send bound for the Sync trait implementation.
- Record
RUSTSEC-2020-0087- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-35924 is a medium vulnerability (CVSS 5.5) in Try-mutex Project Try-mutex, published November 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. Fixed in try-mutex 0.3.0.