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    CVE-2019-18805

    An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

    Published:Apr 16, 2019
    Last Modified:Nov 21, 2024
    EPS:Nov 7, 2019
    EPSS Score:0.0057
    CVSS Score:9.8

    Affected Products

    Vendor
    Broadcom
    Product
    Fabric Operating System
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Aff A400
    Vendor
    Netapp
    Product
    Aff A400 Firmware
    Vendor
    Netapp
    Product
    Aff A700s
    Vendor
    Netapp
    Product
    Aff A700s Firmware
    Vendor
    Netapp
    Product
    Data Availability Services
    Vendor
    Netapp
    Product
    E-series Santricity Os Controller
    Vendor
    Netapp
    Product
    Fas8300
    Vendor
    Netapp
    Product
    Fas8300 Firmware
    Vendor
    Netapp
    Product
    Fas8700
    Vendor
    Netapp
    Product
    Fas8700 Firmware
    Vendor
    Netapp
    Product
    H610s
    Vendor
    Netapp
    Product
    H610s Firmware
    Vendor
    Netapp
    Product
    Hci Compute Node
    Vendor
    Netapp
    Product
    Hci Management Node
    Vendor
    Netapp
    Product
    Hci Storage Node
    Vendor
    Netapp
    Product
    Solidfire
    Vendor
    Netapp
    Product
    Steelstore Cloud Integrated Storage
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2025-9711 (CVSS 8.5) — A vulnerability in Brocade Fabric OS before 9.2.1c3 could allow elevating the privileges of the local authenti…
    CVE-2025-58380 (CVSS 4.6) — A vulnerability in Brocade Fabric OS before 9.2.1 could allow an authenticated attacker with admin privileges …
    CVE-2026-0383 (CVSS 8.2) — A vulnerability in Brocade Fabric OS could allow an authenticated, local attacker with privileges to access th…
    CVE-2025-58379 (CVSS 6) — Brocade Fabric OS before 9.2.1 has a vulnerability that could allow a local authenticated attacker to reveal c…
    CVE-2025-58383 (CVSS 8.4) — A vulnerability in Brocade Fabric OS versions before 9.2.1c2 could allow an administrator-level user to execut…
    CVE-2025-58382 (CVSS 8.5) — A vulnerability in the secure configuration of authentication and management services in Brocade Fabric OS be…
    CVE-2025-4663 (CVSS 6.8) — An Improper Check for Unusual or Exceptional Conditions vulnerability in Brocade Fabric OS before 9.2.2.a co…
    CVE-2025-4661 (CVSS 4.8) — A path transversal vulnerability in Brocade Fabric OS 9.1.0 through 9.2.2 could allow a local admin user to …
    CVE-2025-1976 (CVSS 8.6) — Brocade Fabric OS versions starting with 9.1.0 have root access removed, however, a local user with admin priv…

    References

    http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
    http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html
    https://access.redhat.com/errata/RHSA-2020:0740
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78
    https://security.netapp.com/advisory/ntap-20191205-0001/
    http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
    http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html
    https://access.redhat.com/errata/RHSA-2020:0740
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78
    https://security.netapp.com/advisory/ntap-20191205-0001/

    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