CVE-2019-10638

    Dashboard / Vulnerabilities / CVE-2019-10638

    CVE-2019-10638

    Published: 5 Jul 2019Last Modified: 15 Mar 2026

    Summary:

    Details: In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

    References: https://usn.ubuntu.com/4118-1/, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html, https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html, https://seclists.org/bugtraq/2019/Aug/13, https://usn.ubuntu.com/4115-1/, https://usn.ubuntu.com/4117-1/, https://www.oracle.com/security-alerts/cpuApr2021.html, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html, https://seclists.org/bugtraq/2019/Aug/18, https://seclists.org/bugtraq/2019/Nov/11, http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html, https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html, https://usn.ubuntu.com/4114-1/, https://usn.ubuntu.com/4116-1/, https://access.redhat.com/errata/RHSA-2019:3309, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.7, https://www.debian.org/security/2019/dsa-4495, http://www.securityfocus.com/bid/109092, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.8, https://www.debian.org/security/2019/dsa-4497, https://access.redhat.com/errata/RHSA-2019:3517, https://arxiv.org/pdf/1906.10478.pdf, https://security.netapp.com/advisory/ntap-20190806-0001/, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=355b98553789b646ed97ad801a619ff898471b92, https://github.com/torvalds/linux/commit/df453700e8d81b1bdafdf684365ee2b9431fb702, https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df453700e8d81b1bdafdf684365ee2b9431fb702, https://github.com/torvalds/linux/commit/355b98553789b646ed97ad801a619ff898471b92, https://github.com/torvalds/linux/commit/55f0fc7a02de8f12757f4937143d8d5091b2e40b

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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