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CVE-2020-35911 Explained : Impact and Mitigation

Discover the impact of CVE-2020-35911, a vulnerability in the lock_api crate before 0.4.2 for Rust, leading to potential data races and instability in applications. Learn mitigation steps and best practices for prevention.

An issue was discovered in the lock_api crate before 0.4.2 for Rust. A data race can occur because of MappedRwLockReadGuard unsoundness.

Understanding CVE-2020-35911

This CVE involves a vulnerability in the lock_api crate for Rust that can lead to a data race due to unsoundness in MappedRwLockReadGuard.

What is CVE-2020-35911?

CVE-2020-35911 is a vulnerability found in the lock_api crate before version 0.4.2 for Rust. It allows for the occurrence of a data race due to issues with MappedRwLockReadGuard.

The Impact of CVE-2020-35911

The vulnerability can potentially lead to data races, impacting the reliability and stability of Rust applications utilizing the affected versions of the lock_api crate.

Technical Details of CVE-2020-35911

This section provides more in-depth technical details regarding the CVE.

Vulnerability Description

The vulnerability arises from unsoundness in the MappedRwLockReadGuard within the lock_api crate before version 0.4.2 for Rust.

Affected Systems and Versions

        Affected Product: Not applicable
        Affected Vendor: Not applicable
        Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to trigger data races in Rust applications using the vulnerable versions of the lock_api crate.

Mitigation and Prevention

To address CVE-2020-35911, follow these mitigation and prevention strategies:

Immediate Steps to Take

        Update the lock_api crate to version 0.4.2 or later to mitigate the vulnerability.
        Monitor for any unusual behavior in Rust applications that could indicate a data race.

Long-Term Security Practices

        Regularly update dependencies in Rust projects to ensure the latest security patches are applied.
        Conduct thorough code reviews to identify and address any potential vulnerabilities in the codebase.

Patching and Updates

        Stay informed about security advisories related to Rust crates and promptly apply recommended patches to prevent exploitation of known vulnerabilities.

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