RUSTSEC-2026-0442

    Dashboard / Vulnerabilities / RUSTSEC-2026-0442

    RUSTSEC-2026-0442

    Published: 2 Nov 2026Last Modified: 5 Nov 2026

    Summary: Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads

    Details: Improper validation of RunEndEncoded arrays via `ArrayData::validate_values` can allow reading data beyond the bounds of the child values array when reading the last value via APIs such as `TypedRunArray::value`. Patched versions now properly validate the contents of RunEndEncoded arrays to prevent allowing reading out of bounds of the specified array data. Credit to Adam Korczynski of Ada Logics for reporting this and Anthropic for finding this.

    References: https://crates.io/crates/arrow-data, https://rustsec.org/advisories/RUSTSEC-2026-0442.html, https://github.com/apache/arrow-rs/issues/11587, https://www.openwall.com/lists/oss-security/2026/11/02/2

    Affected packages

    Package

    Name: arrow-data

    Purl: pkg:cargo/arrow-data

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 33.0.0
    Fixed -57.3.2

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    RUSTSEC-2026-0442 | CVE-DB