CVE-2020-36432
Use of Uninitialized Resource in alg_ds
An issue was discovered in the alg_ds crate through 2020-08-25 for Rust. There is a drop of uninitialized memory in Matrix::new().
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- 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 alg_ds crate through 2020-08-25 for Rust. There is a drop of uninitialized memory in Matrix::new().
- Record
CVE-2020-36432- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-908
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the alg_ds crate through 2020-08-25 for Rust. There is a drop of uninitialized memory in Matrix::new().
- Record
CVE-2020-36432- Updated
- 2026-11-02
EUVDEUVD-2021-1551 No score
An issue was discovered in the alg_ds crate through 2020-08-25 for Rust. There is a drop of uninitialized memory in Matrix::new().
- Record
EUVD-2021-1551- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3vv3-frrq-6486
Use of Uninitialized Resource in alg_ds
An issue was discovered in the alg_ds crate through 2020-08-25 for Rust. Matrix::new() internally calls Matrix::fill_with() which uses *ptr = value pattern to initialize the buffer. This pattern assumes that there is an initialized struct at the address and drops it, which results in dropping of uninitialized struct.
- Record
GHSA-3vv3-frrq-6486- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-665, CWE-908
- Updated
- 2026-11-02
OSVGHSA-3vv3-frrq-6486
Use of Uninitialized Resource in alg_ds
An issue was discovered in the alg_ds crate through 2020-08-25 for Rust. Matrix::new() internally calls Matrix::fill_with() which uses *ptr = value pattern to initialize the buffer. This pattern assumes that there is an initialized struct at the address and drops it, which results in dropping of uninitialized struct.
- Record
GHSA-3vv3-frrq-6486- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-665, CWE-908
- Updated
- 2026-11-02
OSVRUSTSEC-2020-0033
Matrix::new() drops uninitialized memory
Matrix::new() internally calls Matrix::fill_with() which uses *ptr = value pattern to initialize the buffer.
This pattern assumes that there is an initialized struct at the address and drops it, which results in dropping of uninitialized struct.
- Record
RUSTSEC-2020-0033- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2020-36432 is a critical vulnerability (CVSS 9.8) in Alg Ds Project Ds, published August 25, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.23%, the 69th percentile. No source names a fixed version.