CVE-2021-27186

    Dashboard / Vulnerabilities / CVE-2021-27186

    CVE-2021-27186

    Published: 10 Feb 2021Last Modified: 8 Jul 2026

    Summary:

    Details: Fluent Bit 1.6.10 has a NULL pointer dereference when an flb_malloc return value is not validated by flb_avro.c or http_server/api/v1/metrics.c.

    References: https://github.com/fluent/fluent-bit/pull/3045, https://github.com/fluent/fluent-bit/pull/3047, https://github.com/fluent/fluent-bit/issues/3044

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 804f2af1002b9608a8a2994233583eaf22ad45ba
    Fixed -None

    Affected versions

    1.6.10

    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
    CVE-2021-27186 | CVE-DB