CVE-2019-15554 Memory corruption in smallvec

Critical 9.8 Published 26 Aug 2019 Updated 5 Aug 2024

Memory corruption in the smallvec Rust crate allows attackers to potentially execute arbitrary code or cause denial of service via crafted grow attempts.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-15554?

CVE-2019-15554 is a critical memory corruption vulnerability in n/a, published on 26 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in the smallvec crate before 0.6.10 for Rust. There is memory corruption for certain grow attempts with less than the current capacity.

Weakness: CWE-787

Which versions are affected by CVE-2019-15554?

3 open source packages ship an affected version, including smallvec. It affects 1 product.

Package	Affected	Fixed in
`smallvec` crates.io	From `0.6.3`	`0.6.10`
`smallvec` crates.io	From `0.6.3`	`0.6.10`
`smallvec` crates.io	From `0.6.3`	`0.6.10`

Products include Servo Smallvec.

How do I fix CVE-2019-15554?

Upgrade smallvec to 0.6.10 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-15554 being exploited?

There is no known exploitation of CVE-2019-15554 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-15554, GHSA-69gw-hgj3-45m7, RUSTSEC-2019-0012.