UBUNTU-CVE-2026-119134

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    UBUNTU-CVE-2026-119134

    Published: 29 Oct 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-119134

    Summary:

    Details: Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not charge handle allocations to any ResourceLimiter or StoreLimits. A malicious guest can repeatedly call resource.new and instantiate sub-components to exceed the per-instance cap many times over, causing unbounded host memory growth.

    References: https://ubuntu.com/security/CVE-2026-119134, https://www.cve.org/CVERecord?id=CVE-2026-119134, https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q554-3cjc-rx7p, https://www.vulncheck.com/advisories/wasmtime-before-36.0.18-37.0.0-before-48.0.6-and-49.0.0-before-49.0.3-unbounded-memory-growth-via-component-model-resource-handles

    Affected packages

    Package

    Name: rust-wasmtime

    Purl: pkg:deb/ubuntu/rust-wasmtime?arch=source&distro=noble

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    10.0.1+dfsg-7

    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
    UBUNTU-CVE-2026-119134 | CVE-DB