CVE-2019-15554 — Memory corruption in smallvec — CVE Details

CRITICAL

Memory corruption in smallvec

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

Summary

Attempting to call grow on a spilled SmallVec with a value less than the current capacity causes corruption of memory allocator data structures. 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).

Package	Ecosystem	Affected	Fixed In
smallvec	crates.io	All versions	0.6.10

Vulnerability Classification

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

CWE-787
Out-of-bounds WriteMITRE

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-2019-15554?: Memory corruption 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-2019-15554?: CVE-2019-15554 affects smallvec. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-15554 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-69gw-hgj3-45m7

RUSTSEC-2019-0012

Related CVEs

CVE-2018-20991
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Possible double free during unwinding in SmallVec::insert_many
CVE-2019-15551
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Double-free and use-after-free in SmallVec::grow()
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Buffer overflow in SmallVec::insert_many
RUSTSEC-2026-0327
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Wasmtime component async-lifted callback result count is unvalidated, causing a native stack buffer overflow
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Buffer overflow in SmallVec::insert_many
CVE-2019-15551
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CVE-2018-20991
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Double free in smallvec
CVE-2018-25023
HIGH
Use of Uninitialized Resource in smallvec

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