DEBIAN-CVE-2026-121996

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    DEBIAN-CVE-2026-121996

    Published: 5 Nov 2026Last Modified: 6 Nov 2026
    Upstream:
    CVE-2026-121996

    Summary:

    Details: A length validation flaw in gdbserver's agent-expression parser allows an unauthenticated remote attacker to read uninitialized heap memory from the gdbserver process and cause a denial of service. Disclosed heap content includes addresses suitable for defeating ASLR in further exploitation.

    References: https://security-tracker.debian.org/tracker/CVE-2026-121996

    Affected packages

    Package

    Name: gdb

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    13.1-3

    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-2026-121996 | CVE-DB