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CVE-2020-35888

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

9.8 Critical

CVE-2020-35888 is a critical vulnerability (CVSS 9.8) in Arr Project Arr, published August 25, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 75th percentile. No source names a fixed version.

What does this mean?
Severity
9.8 CriticalCVSS 3.1, NVD
Exploit chance
1.53%EPSS, 75th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

An issue was discovered in the arr crate through 2020-08-25 for Rust. Uninitialized memory is dropped by Array::new_from_template.

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

1.53%Up 1.1 points since Apr 14, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
arr
crates.io
through 0.6.1None known
arr
crates.io
From an advisory covering 3 CVEs
through 0.6.1None known
arr
crates.io
From an advisory covering 3 CVEs
0.0.0-0 and laterNone known

What each source reports

NVD Score used9.8

An issue was discovered in the arr crate through 2020-08-25 for Rust. Uninitialized memory is dropped by Array::new_from_template.

Record
CVE-2020-35888
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-908
Updated
2026-11-02
CVE ListNo score

An issue was discovered in the arr crate through 2020-08-25 for Rust. Uninitialized memory is dropped by Array::new_from_template.

Record
CVE-2020-35888
Updated
2026-11-02
EUVDEUVD-2021-1534No score

An issue was discovered in the arr crate through 2020-08-25 for Rust. Uninitialized memory is dropped by Array::new_from_template.

Record
EUVD-2021-1534
Updated
2026-11-03
GitHub AdvisoriesGHSA-36xw-hgfv-jwm79.8

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

arr crate contains multiple security issues. Specifically,

  1. It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.
  2. Index and IndexMut implementation does not check the array bound.
  3. Array::new_from_template() drops uninitialized memory.
Record
GHSA-36xw-hgfv-jwm7
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-908
Updated
2026-11-02
OSVCVE-2020-358879.8

An issue was discovered in the arr crate through 2020-08-25 for Rust. There is a buffer overflow in Index and IndexMut.

Record
CVE-2020-35887
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-36xw-hgfv-jwm79.8

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

arr crate contains multiple security issues. Specifically,

  1. It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.
  2. Index and IndexMut implementation does not check the array bound.
  3. Array::new_from_template() drops uninitialized memory.
Record
GHSA-36xw-hgfv-jwm7
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-908
Updated
2026-11-02
OSVGHSA-c7fw-cr3w-wvfc4.7

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

arr crate contains multiple security issues. Specifically,

  1. It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.
  2. Index and IndexMut implementation does not check the array bound.
  3. Array::new_from_template() drops uninitialized memory.
Record
GHSA-c7fw-cr3w-wvfc
CVSS 3.1
4.7 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-362
Updated
2026-11-02
OSVGHSA-fhvj-7f9p-w7889.8

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

arr crate contains multiple security issues. Specifically,

  1. It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.
  2. Index and IndexMut implementation does not check the array bound.
  3. Array::new_from_template() drops uninitialized memory.
Record
GHSA-fhvj-7f9p-w788
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-120
Updated
2026-11-02
OSVRUSTSEC-2020-0034No score

Multiple security issues including data race, buffer overflow, and uninitialized memory drop

arr crate contains multiple security issues. Specifically,

  1. It incorrectly implements Sync/Send bounds, which allows to smuggle non-Sync/Send types across the thread boundary.
  2. Index and IndexMut implementation does not check the array bound.
  3. Array::new_from_template() drops uninitialized memory.
Record
RUSTSEC-2020-0034
Updated
2026-11-02

History

History
RecordedChangedSources
aliases
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

References

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