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Ubuntu Security Notices (USN)

Source: https://ubuntu.com/security/notices

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  • High max 7.8
    USN-7607-3 10 CVEs 1 exploited

    linux-kvm vulnerabilities

    It was discovered that a use-after-free vulnerability existed in the Bluetooth stack in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3640) Several security issues w…

    first Jul 8, 2025
  • High max 7.8
    USN-7874-1 8 CVEs 1 exploited

    linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 19, 2025
  • High max 7.8
    USN-7861-1 4 CVEs 1 exploited

    linux, linux-aws, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-lowlatency vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 6, 2025
  • High max 7.8
    USN-7874-3 8 CVEs 1 exploited

    linux-iot vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Dec 4, 2025
  • High max 7.8
    USN-7864-1 5 CVEs 1 exploited

    linux-gcp, linux-gcp-6.8, linux-gke vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 7, 2025
  • High max 8.2
    USN-7863-1 12 CVEs 2 exploited

    linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 6, 2025
  • High max 7.8
    USN-7861-5 4 CVEs 1 exploited

    linux-raspi, linux-raspi-realtime, linux-xilinx vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Dec 3, 2025
  • High max 7.8
    USN-7874-2 8 CVEs 1 exploited

    linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 19, 2025
  • High max 8.2
    USN-7853-3 11 CVEs 2 exploited

    linux-azure, linux-azure-4.15 vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 7, 2025
  • High max 7.8
    USN-7861-3 4 CVEs 1 exploited

    linux-nvidia-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 13, 2025
  • High max 8.2
    USN-7853-1 11 CVEs 2 exploited

    linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Oct 30, 2025
  • High max 7.8
    USN-7861-4 4 CVEs 1 exploited

    linux-aws-6.8 vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 19, 2025
  • High max 7.8
    USN-7861-2 4 CVEs 1 exploited

    linux-realtime, linux-realtime-6.8 vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Nov 7, 2025
  • High max 8.2
    USN-7853-2 11 CVEs 2 exploited

    linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Oct 30, 2025
  • High max 8.8
    USN-7455-1 12 CVEs 1 exploited

    linux, linux-aws, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-igx, linux-oracle, linux-raspi vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 24, 2025
  • High max 8.8
    USN-7455-2 12 CVEs 1 exploited

    linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 24, 2025
  • High max 8.8
    USN-7460-1 13 CVEs 1 exploited

    linux-azure-fips vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 24, 2025
  • High max 8.8
    USN-7455-5 12 CVEs 1 exploited

    linux-aws-5.15 vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 29, 2025
  • High max 8.8
    USN-7455-4 12 CVEs 1 exploited

    linux-oracle-5.15 vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 25, 2025
  • High max 8.8
    USN-7455-3 12 CVEs 1 exploited

    linux-intel-iot-realtime, linux-realtime vulnerabilities

    Jann Horn discovered that the watch_queue event notification subsystem in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or escalate their privileges. (CVE-2022-0995…

    first Apr 24, 2025
  • High max 7.1
    USN-7850-1 2 CVEs 1 exploited

    linux vulnerabilities

    Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker i…

    first Oct 30, 2025
  • High max 7.8
    USN-7429-1 21 CVEs 1 exploited

    linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Drivers core; - HID subsystem; - Network drivers; - SCSI subsystem; - SuperH …

    first Apr 9, 2025
  • High max 7.8
    USN-7429-2 21 CVEs 1 exploited

    linux-fips vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Drivers core; - HID subsystem; - Network drivers; - SCSI subsystem; - SuperH …

    first Apr 9, 2025
  • High max 7.8
    USN-7402-1 8 CVEs 1 exploited

    linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oem-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - GPU drivers; - HID subsystem; - Media drivers; - JFS…

    first Apr 1, 2025
  • High max 7.8
    USN-7402-4 8 CVEs 1 exploited

    linux-azure, linux-azure-6.8, linux-nvidia-lowlatency vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - GPU drivers; - HID subsystem; - Media drivers; - JFS…

    first Apr 7, 2025
  • High max 7.8
    USN-7402-3 8 CVEs 1 exploited

    linux-nvidia, linux-nvidia-6.8 vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - GPU drivers; - HID subsystem; - Media drivers; - JFS…

    first Apr 4, 2025
  • High max 7.8
    USN-7402-5 8 CVEs 1 exploited

    linux-gcp-6.8 vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - GPU drivers; - HID subsystem; - Media drivers; - JFS…

    first Apr 22, 2025
  • High max 7.8
    USN-7402-2 8 CVEs 1 exploited

    linux-realtime vulnerabilities

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - GPU drivers; - HID subsystem; - Media drivers; - JFS…

    first Apr 1, 2025
  • High max 8.8
    USN-7142-1 2 CVEs 2 exploited

    webkit2gtk vulnerabilities

    Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting a…

    first Dec 9, 2024
  • High max 7.8
    USN-6701-4 12 CVEs 1 exploited

    linux-azure vulnerabilities

    Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)…

    first Apr 9, 2024
  • High max 7.8
    USN-6701-3 12 CVEs 1 exploited

    linux-aws-hwe, linux-azure, linux-azure-4.15, linux-oracle vulnerabilities

    Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)…

    first Mar 25, 2024
  • High max 7.8
    USN-6701-2 12 CVEs 1 exploited

    linux-gcp, linux-gcp-4.15 vulnerabilities

    Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)…

    first Mar 20, 2024
  • High max 7.8
    USN-6700-2 7 CVEs 1 exploited

    linux-aws vulnerabilities

    It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation in the Linux kernel contained a race condition when releasing PPPoL2TP sockets in certain conditions, leading to a use-after-free vulnerability. A local attacker could use this to cau…

    first Mar 21, 2024
  • High max 7.8
    USN-6701-1 12 CVEs 1 exploited

    linux, linux-aws, linux-hwe, linux-kvm, linux-oracle vulnerabilities

    Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)…

    first Mar 18, 2024
  • High max 7.8
    USN-6700-1 7 CVEs 1 exploited

    linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities

    It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation in the Linux kernel contained a race condition when releasing PPPoL2TP sockets in certain conditions, leading to a use-after-free vulnerability. A local attacker could use this to cau…

    first Mar 18, 2024
  • High max 8.1
    USN-6134-1 24 CVEs 1 exploited

    linux-intel-iotg-5.15 vulnerabilities

    It was discovered that the Traffic-Control Index (TCINDEX) implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix …

    first Jun 1, 2023
  • High max 7.9
    USN-5982-1 15 CVEs 1 exploited

    linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-gcp, linux-gcp-5.15, linux-gkeop, linux-hwe-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities

    It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest …

    first Mar 28, 2023
  • High max 7.9
    USN-6030-1 16 CVEs 1 exploited

    linux-snapdragon vulnerabilities

    It was discovered that the Traffic-Control Index (TCINDEX) implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-1…

    first Apr 19, 2023
  • High max 7.9
    USN-6009-1 11 CVEs 1 exploited

    linux-gcp vulnerabilities

    It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669) It was discovered that a use-after…

    first Apr 11, 2023
  • High max 7.9
    USN-5991-1 11 CVEs 1 exploited

    linux-gcp-4.15 vulnerabilities

    It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669) It was discovered that a use-after…

    first Mar 31, 2023