UBUNTU-CVE-2026-18313

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    UBUNTU-CVE-2026-18313

    Published: 5 Sept 2026Last Modified: 25 Sept 2026
    Upstream:
    CVE-2026-18313

    Summary:

    Details: rpcapd can allocate up to 65536 bytes per each RPCAP_MSG_UPDATEFILTER_REQ or RPCAP_MSG_STARTCAP_REQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster.

    References: https://ubuntu.com/security/CVE-2026-18313, https://www.cve.org/CVERecord?id=CVE-2026-18313

    Affected packages

    Package

    Name: libpcap

    Purl: pkg:deb/ubuntu/libpcap?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.4.0-2

    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-2026-18313 | CVE-DB