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Ubuntu Security Notices (USN)

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

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  • High max 8.1
    USN-6416-3 13 CVEs

    linux-raspi vulnerabilities

    It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206) Daniel Trujillo,…

    first Oct 19, 2023
  • 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-7755-1 10 CVEs

    linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle 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: - Media drivers; - SPI subsystem; - USB core drivers; - NILFS2 file system; - I…

    first Sep 17, 2025
  • High max 7.8
    USN-7610-1 6 CVEs

    linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, 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: - Netfilter; - Network traffic control; (CVE-2025-38001, CVE-2025-37997, CVE-20…

    first Jul 1, 2025
  • High max 7.8
    USN-8480-1 2 CVEs

    sqlite3 vulnerabilities

    It was discovered that SQLite incorrectly handled certain memory operations in the FTS5 full-text search extension. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code.

    first Jun 29, 2026
  • 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 7.8
    USN-7727-2 10 CVEs

    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: - InfiniBand drivers; - Media drivers; - SPI subsystem; - USB core drivers; - N…

    first Aug 28, 2025
  • High max 7.8
    USN-7727-1 10 CVEs

    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: - InfiniBand drivers; - Media drivers; - SPI subsystem; - USB core drivers; - N…

    first Aug 28, 2025
  • High max 7.8
    USN-7727-3 10 CVEs

    linux-aws 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: - InfiniBand drivers; - Media drivers; - SPI subsystem; - USB core drivers; - N…

    first Sep 2, 2025
  • High max 8.8
    USN-7685-1 10 CVEs

    linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm 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: - Device tree and open firmware driver; - SCSI subsystem; - TTY drivers; - Ext4…

    first Aug 5, 2025
  • High max 8.8
    USN-7685-5 10 CVEs

    linux-oracle 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: - Device tree and open firmware driver; - SCSI subsystem; - TTY drivers; - Ext4…

    first Aug 13, 2025
  • High max 8.8
    USN-7685-4 10 CVEs

    linux-oracle 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: - Device tree and open firmware driver; - SCSI subsystem; - TTY drivers; - Ext4…

    first Aug 5, 2025
  • High max 8.8
    USN-7685-2 10 CVEs

    linux-azure 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: - Device tree and open firmware driver; - SCSI subsystem; - TTY drivers; - Ext4…

    first Aug 5, 2025
  • High max 8.8
    USN-7685-3 10 CVEs

    linux-aws-fips, linux-azure-fips, linux-fips, linux-gcp-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: - Device tree and open firmware driver; - SCSI subsystem; - TTY drivers; - Ext4…

    first Aug 5, 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-7495-3 3 CVEs

    linux-azure 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: - Network drivers; - Ceph distributed file system; - Netfilter; (CVE-2023-52664…

    first May 7, 2025
  • High max 8.8
    USN-7495-2 3 CVEs

    linux-aws-fips, linux-fips, linux-gcp-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: - Network drivers; - Ceph distributed file system; - Netfilter; (CVE-2023-52664…

    first May 6, 2025
  • High max 7.8
    USN-7494-5 2 CVEs

    linux-azure-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: - Network drivers; - Netfilter; (CVE-2023-52664, CVE-2023-52927)

    first May 7, 2025
  • High max 8.8
    USN-7495-1 3 CVEs

    linux, linux-aws, linux-aws-5.4, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4 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: - Network drivers; - Ceph distributed file system; - Netfilter; (CVE-2023-52927…

    first May 6, 2025
  • High max 7.8
    USN-7494-4 2 CVEs

    linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15 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: - Network drivers; - Netfilter; (CVE-2023-52927, CVE-2023-52664)

    first May 7, 2025
  • High max 7.8
    USN-7494-1 2 CVEs

    linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-igx, linux-oracle, linux-oracle-5.15, linux-raspi 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: - Network drivers; - Netfilter; (CVE-2023-52664, CVE-2023-52927)

    first May 6, 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 7.8
    USN-7494-2 2 CVEs

    linux-aws-fips, linux-fips, linux-gcp-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: - Network drivers; - Netfilter; (CVE-2023-52927, CVE-2023-52664)

    first May 6, 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 7.8
    USN-7494-3 2 CVEs

    linux-intel-iot-realtime, 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: - Network drivers; - Netfilter; (CVE-2023-52664, CVE-2023-52927)

    first May 6, 2025