Double Free in Servo Smallvec

CVE-2019-15551

An issue was discovered in the smallvec crate before 0.6.10 for Rust. There is a double free for certain grow attempts with the current capacity.

Vulnerability class: Double Free

EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Servo Smallvec
N/a — versions n/a

Weakness classification (CWE)

CWE-415 — Double Free

Public proof-of-concept exploits

Artisan-Lab/Rust-memory-safety-bugs

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-15551?: CVE-2019-15551 is a critical-severity vulnerability in Servo Smallvec, classified under Double Free. CVSS score: 9.8/10. Published 2019-08-26.
How severe is CVE-2019-15551?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-15551 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.