In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001376 advisory.

    In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and     full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c.
    For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback     interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an     unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004239 advisory.

    In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and     full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c.
    For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback     interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an     unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004194 advisory.

    In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and     full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c.
    For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback     interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an     unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and     full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c.
    For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback     interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an     unprivileged user, are sometimes performed by a kernel worker thread without considering that context.
    (CVE-2019-19241)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4284-1 advisory.

    It was discovered that the Linux kernel did not properly clear data structures on context switches for     certain Intel graphics processors. A local attacker could use this to expose sensitive information.
    (CVE-2019-14615)

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly validate device metadata. A physically proximate attacker could use this to cause a denial of     service (system crash). (CVE-2019-15099)

    It was discovered that the HSA Linux kernel driver for AMD GPU devices did not properly check for errors     in certain situations, leading to a NULL pointer dereference. A local attacker could possibly use this to     cause a denial of service. (CVE-2019-16229)

    It was discovered that the Marvell 8xxx Libertas WLAN device driver in the Linux kernel did not properly     check for errors in certain situations, leading to a NULL pointer dereference. A local attacker could     possibly use this to cause a denial of service. (CVE-2019-16232)

    It was discovered that a race condition existed in the Virtual Video Test Driver in the Linux kernel. An     attacker with write access to /dev/video0 on a system with the vivid module loaded could possibly use this     to gain administrative privileges. (CVE-2019-18683)

    It was discovered that the Renesas Digital Radio Interface (DRIF) driver in the Linux kernel did not     properly initialize data. A local attacker could possibly use this to expose sensitive information (kernel     memory). (CVE-2019-18786)

    It was discovered that the Sound Open Firmware (SOF) driver in the Linux kernel did not properly     deallocate memory in certain error conditions. A local attacker could use this to cause a denial of     service (kernel memory exhaustion). (CVE-2019-18811)

    It was discovered that the crypto subsystem in the Linux kernel did not properly deallocate memory in     certain error conditions. A local attacker could use this to cause a denial of service (kernel memory     exhaustion). (CVE-2019-19050, CVE-2019-19062)

    It was discovered that multiple memory leaks existed in the Marvell WiFi-Ex Driver for the Linux kernel. A     local attacker could possibly use this to cause a denial of service (kernel memory exhaustion).
    (CVE-2019-19057)

    It was discovered that the Realtek rtlwifi USB device driver in the Linux kernel did not properly     deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial     of service (kernel memory exhaustion). (CVE-2019-19063)

    It was discovered that the RSI 91x WLAN device driver in the Linux kernel did not properly deallocate     memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel     memory exhaustion). (CVE-2019-19071)

    It was discovered that the Broadcom Netxtreme HCA device driver in the Linux kernel did not properly     deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial     of service (kernel memory exhaustion). (CVE-2019-19077)

    It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not     properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause     a denial of service (kernel memory exhaustion). (CVE-2019-19078)

    It was discovered that the AMD GPU device drivers in the Linux kernel did not properly deallocate memory     in certain error conditions. A local attacker could use this to possibly cause a denial of service (kernel     memory exhaustion). (CVE-2019-19082)

    It was discovered that the IO uring implementation in the Linux kernel did not properly perform     credentials checks in certain situations. A local attacker could possibly use this to gain administrative     privileges. (CVE-2019-19241)

    Or Cohen discovered that the virtual console subsystem in the Linux kernel did not properly restrict     writes to unimplemented vcsu (unicode) devices. A local attacker could possibly use this to cause a denial     of service (system crash) or have other unspecified impacts. (CVE-2019-19252)

    It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly handle ioctl     requests to get emulated CPUID features. An attacker with access to /dev/kvm could use this to cause a     denial of service (system crash). (CVE-2019-19332)

    It was discovered that a race condition existed in the Linux kernel on x86 platforms when keeping track of     which process was assigned control of the FPU. A local attacker could use this to cause a denial of     service (memory corruption) or possibly gain administrative privileges. (CVE-2019-19602)

    It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle     certain conditions. An attacker could use this to specially craft an ext4 file system that, when mounted,     could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19767)

    It was discovered that the Kvaser CAN/USB driver in the Linux kernel did not properly initialize memory in     certain situations. A local attacker could possibly use this to expose sensitive information (kernel     memory). (CVE-2019-19947)

    Gao Chuan discovered that the SAS Class driver in the Linux kernel contained a race condition that could     lead to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service     (system crash). (CVE-2019-19965)

    It was discovered that the B2C2 FlexCop USB device driver in the Linux kernel did not properly validate     device metadata. A physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2019-15291)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
290640	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001376)	Nessus	Unity Linux Local Security Checks	high
288556	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004239)	Nessus	Unity Linux Local Security Checks	high
288469	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004194)	Nessus	Unity Linux Local Security Checks	high
245219	Linux Distros Unpatched Vulnerability : CVE-2019-19241	Nessus	Misc.	high
133797	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4284-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2019-19241

high

Tenable Plugins

high

high

high

high

high