CVE-2020-36451
Data races in rcu_cell
An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
- Record
CVE-2020-36451- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-77
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
- Record
CVE-2020-36451- Updated
- 2026-11-02
EUVDEUVD-2021-1593 No score
An issue was discovered in the rcu_cell crate through 2020-11-14 for Rust. There are unconditional implementations of Send and Sync for RcuCell<T>.
- Record
EUVD-2021-1593- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-686h-j8r8-wmfm
Data races in rcu_cell
Affected versions of this crate unconditionally implement Send/Sync for RcuCell<T>.
This allows users to send T: !Send to other threads (while T enclosed within RcuCell<T>), and allows users to concurrently access T: !Sync by using the APIs of RcuCell<T> that provide access to &T.
This can result in memory corruption caused by data races.
- Record
GHSA-686h-j8r8-wmfm- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77, CWE-362
- Updated
- 2026-11-02
OSVGHSA-686h-j8r8-wmfm
Data races in rcu_cell
Affected versions of this crate unconditionally implement Send/Sync for RcuCell<T>.
This allows users to send T: !Send to other threads (while T enclosed within RcuCell<T>), and allows users to concurrently access T: !Sync by using the APIs of RcuCell<T> that provide access to &T.
This can result in memory corruption caused by data races.
- Record
GHSA-686h-j8r8-wmfm- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-362, CWE-77
- Updated
- 2026-11-02
OSVRUSTSEC-2020-0131
Send/Sync bound needed on T for Send/Sync impl of RcuCell<T>
Affected versions of this crate unconditionally implement Send/Sync for RcuCell<T>.
This allows users to send T: !Send to other threads (while T enclosed within RcuCell<T>), and allows users to concurrently access T: !Sync by using the APIs of RcuCell<T> that provide access to &T.
This can result in memory corruption caused by data races.
- Record
RUSTSEC-2020-0131- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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-2020-36451 is a high vulnerability (CVSS 8.1) in Rcu Cell Project Cell, published November 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.25%, the 69th percentile. Fixed in rcu_cell 0.1.9.
References
rustsec.org/advisories/RUSTSEC-2020-0131.html
raw.githubusercontent.com/rustsec/advisory-db/main/crates/rcu_cell/RUSTSEC-2020-0131.md
nvd.nist.gov/vuln/detail/CVE-2020-36451
github.com/Xudong-Huang/rcu_cell/issues/3
crates.io/crates/rcu_cell