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CVE-2019-15551 — Double free in smallvec — CVE Details

CRITICAL

Double free in smallvec

Published August 25, 2021Updated November 8, 2023Source: osv

Summary

Attempting to call grow on a spilled SmallVec with a value equal to the current capacity causes it to free the existing data. This performs a double free immediately and may lead to use-after-free on subsequent accesses to the SmallVec contents. An attacker that controls the value passed to grow may exploit this flaw to obtain memory contents or gain remote code execution.

Advisory Timeline

  • First published August 25, 2021 (1874 days ago).
  • Last revised November 8, 2023 — 804 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update smallvec to 0.6.10 or later
cargo update -p smallvec --precise 0.6.10

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
smallvec
crates.io
All versions0.6.10

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2019-15551?
Double free in smallvec This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2019-15551?
CVE-2019-15551 affects smallvec. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-15551 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-mm7v-vpv8-xfc3
RUSTSEC-2019-0009

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