Every CVE Search/ Get API key

CVE-2021-38190

Out of bounds write in nalgebra

9.8 CriticalFix available

An issue was discovered in the nalgebra crate before 0.27.1 for Rust. It allows out-of-bounds memory access because it does not ensure that the number of elements is equal to the product of the row count and column count.

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

1.41%Up 0.8 points since Aug 8, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

An issue was discovered in the nalgebra crate before 0.27.1 for Rust. It allows out-of-bounds memory access because it does not ensure that the number of elements is equal to the product of the row count and column count.

Record
CVE-2021-38190
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

An issue was discovered in the nalgebra crate before 0.27.1 for Rust. It allows out-of-bounds memory access because it does not ensure that the number of elements is equal to the product of the row count and column count.

Record
CVE-2021-38190
Updated
2026-11-02
EUVDEUVD-2021-1552 No score

An issue was discovered in the nalgebra crate before 0.27.1 for Rust. It allows out-of-bounds memory access because it does not ensure that the number of elements is equal to the product of the row count and column count.

Record
EUVD-2021-1552
Updated
2026-11-03
GitHub AdvisoriesGHSA-3w8g-xr3f-2mp8 9.8

Out of bounds write in nalgebra

The Deserialize implementation for VecStorage did not maintain the invariant that the number of elements must equal nrows * ncols. Deserialization of specially crafted inputs could allow memory access beyond allocation of the vector.

This flaw was introduced in v0.11.0 (086e6e) due to the addition of an automatically derived implementation of Deserialize for MatrixVec. MatrixVec was later renamed to VecStorage in v0.16.13 (0f66403) and continued to use the automatically derived implementation of Deserialize.

Record
GHSA-3w8g-xr3f-2mp8
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119, CWE-787
Updated
2026-11-02
OSVAZL-41989 9.8

CVE-2021-38190 affecting package librsvg2 for versions less than 2.58.1-1

An issue was discovered in the nalgebra crate before 0.27.1 for Rust. It allows out-of-bounds memory access because it does not ensure that the number of elements is equal to the product of the row count and column count.

Record
AZL-41989
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-3w8g-xr3f-2mp8 9.8

Out of bounds write in nalgebra

The Deserialize implementation for VecStorage did not maintain the invariant that the number of elements must equal nrows * ncols. Deserialization of specially crafted inputs could allow memory access beyond allocation of the vector.

This flaw was introduced in v0.11.0 (086e6e) due to the addition of an automatically derived implementation of Deserialize for MatrixVec. MatrixVec was later renamed to VecStorage in v0.16.13 (0f66403) and continued to use the automatically derived implementation of Deserialize.

Record
GHSA-3w8g-xr3f-2mp8
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119, CWE-787
Updated
2026-11-02
OSVRUSTSEC-2021-0070 No score

VecStorage Deserialize Allows Violation of Length Invariant

The Deserialize implementation for VecStorage did not maintain the invariant that the number of elements must equal nrows * ncols. Deserialization of specially crafted inputs could allow memory access beyond allocation of the vector.

This flaw was introduced in v0.11.0 (086e6e) due to the addition of an automatically derived implementation of Deserialize for MatrixVec. MatrixVec was later renamed to VecStorage in v0.16.13 (0f66403) and continued to use the automatically derived implementation of Deserialize.

This flaw was corrected in commit 5bff536 by returning an error during deserialization if the number of elements does not exactly match the expected size.

Record
RUSTSEC-2021-0070
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
nalgebra
crates.io
0.11.0 up to 0.27.1
0.27.1
librsvg2
Azure Linux:3
before 2.58.1-1
2.58.1-1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-38190 is a critical vulnerability (CVSS 9.8) in Dimforge Nalgebra, published June 6, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.41%, the 72nd percentile. Fixed in nalgebra 0.27.1.

References

Show 4 moreShow less
MoveEnter Open