DEBIAN-CVE-2021-3420

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    DEBIAN-CVE-2021-3420

    Published: 5 Mar 2021Last Modified: 1 Sept 2026
    Upstream:
    CVE-2021-3420

    Summary:

    Details: A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.

    References: https://security-tracker.debian.org/tracker/CVE-2021-3420

    Affected packages

    Package

    Name: newlib

    Purl: pkg:deb/debian/newlib?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.3.0-1.3+deb12u1

    Affected versions

    3.3.0-1.3

    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
    DEBIAN-CVE-2021-3420 | CVE-DB