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Ubuntu Security Notices (USN)

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

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  • 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
  • Critical max 9.8
    USN-7539-1 401 CVEs 4 exploited

    linux-raspi vulnerabilities

    Chenyuan Yang discovered that the CEC driver driver 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-2024-23848) Attila Szász dis…

    first May 28, 2025
  • Critical max 9.8
    USN-7540-1 398 CVEs 4 exploited

    linux-raspi-5.4 vulnerabilities

    Chenyuan Yang discovered that the CEC driver driver 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-2024-23848) Attila Szász dis…

    first May 28, 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
  • Critical max 9.8
    USN-7459-1 267 CVEs 3 exploited

    linux-intel-iotg-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 24, 2025
  • Critical max 9.8
    USN-7384-2 318 CVEs 1 exploited

    linux-azure-6.8 vulnerabilities

    Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper access control vulnerability. A nearby attacker could use this to connect a rougue device and possibly execute arbitrary code. (CVE-2024-8805) Attila Szás…

    first Apr 1, 2025
  • Critical max 9.8
    USN-7459-2 267 CVEs 3 exploited

    linux-gcp-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 28, 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
  • Critical max 9.8
    USN-7475-1 16 CVEs 1 exploited

    linux-xilinx-zynqmp 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 May 2, 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
  • Critical max 9.8
    USN-7384-1 318 CVEs 1 exploited

    linux-azure vulnerabilities

    Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper access control vulnerability. A nearby attacker could use this to connect a rougue device and possibly execute arbitrary code. (CVE-2024-8805) Attila Szás…

    first Mar 27, 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
  • Critical max 9.8
    USN-7387-1 251 CVEs 2 exploited

    linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-intel-iotg, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, 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: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V arc…

    first Mar 27, 2025
  • Critical max 9.8
    USN-7392-1 154 CVEs 2 exploited

    linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp vulnerabilities

    Chenyuan Yang discovered that the CEC driver driver 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-2024-23848) Attila Szász dis…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7294-1 144 CVEs 2 exploited

    linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-ibm-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: - ARM64 architecture; - Block layer subsystem; - ACPI drivers; - Drivers core; …

    first Feb 26, 2025
  • Critical max 9.2
    USN-8956-2 1 CVE 1 exploited

    brotli vulnerability

    USN-8956-1 fixed a vulnerability in Brotli. This update provides the corresponding fixes for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that Brotli incorrectly handled certain compressed streams. A r…

    first Oct 27, 2026
  • Critical max 9.2
    USN-8956-1 1 CVE 1 exploited

    brotli vulnerability

    It was discovered that Brotli incorrectly handled certain compressed streams. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

    first Oct 26, 2026
  • Critical max 9.8
    USN-7387-2 251 CVEs 2 exploited

    linux-fips, linux-aws-fips, linux-azure-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: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V arc…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7458-1 358 CVEs 4 exploited

    linux-ibm-5.15 vulnerabilities

    Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service (system crash) or pos…

    first Apr 24, 2025
  • Critical max 9.8
    USN-7387-3 251 CVEs 2 exploited

    linux-realtime, linux-intel-iot-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: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V arc…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7289-2 103 CVEs 2 exploited

    linux-azure-5.15, linux-azure-fde-5.15, linux-oracle-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: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drive…

    first Feb 25, 2025
  • Critical max 9.8
    USN-7293-1 145 CVEs 2 exploited

    linux, linux-hwe-5.4 vulnerabilities

    Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service (system crash) or pos…

    first Feb 26, 2025
  • Critical max 9.8
    USN-7289-1 103 CVEs 2 exploited

    linux-azure, linux-azure-fde, linux-gkeop, linux-nvidia, 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: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drive…

    first Feb 24, 2025
  • Critical max 9.8
    USN-7289-3 103 CVEs 2 exploited

    linux-ibm 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: - ARM64 architecture; - x86 architecture; - Block layer subsystem; - ACPI drive…

    first Feb 25, 2025
  • Critical max 9.8
    USN-7332-1 36 CVEs 1 exploited

    linux, 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: - PowerPC architecture; - Block layer subsystem; - GPIO subsystem; - GPU driver…

    first Mar 5, 2025
  • Critical max 9.1
    USN-7428-1 20 CVEs 1 exploited

    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

    Demi Marie Obenour and Simon Gaiser discovered that several Xen para- virtualization device frontends did not properly restrict the access rights of device backends. An attacker could possibly use a malicious Xen backend to gain access to memory pages of a gu…

    first Apr 9, 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
  • Critical max 9.8
    USN-7392-2 154 CVEs 2 exploited

    linux-azure-fips, linux-gcp-fips vulnerabilities

    Chenyuan Yang discovered that the CEC driver driver 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-2024-23848) Attila Szász dis…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7391-1 153 CVEs 2 exploited

    linux, linux-hwe-5.4 vulnerabilities

    Chenyuan Yang discovered that the CEC driver driver 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-2024-23848) Several security…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7421-1 256 CVEs 2 exploited

    linux-azure-5.15, 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: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V arc…

    first Apr 7, 2025
  • Critical max 9.8
    USN-7388-1 356 CVEs 4 exploited

    linux-aws-5.15, linux-kvm vulnerabilities

    Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service (system crash) or pos…

    first Mar 27, 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
  • Critical max 9.8
    USN-7389-1 357 CVEs 4 exploited

    linux-nvidia-tegra, linux-nvidia-tegra-igx vulnerabilities

    Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service (system crash) or pos…

    first Mar 28, 2025
  • Critical max 9.8
    USN-7294-2 144 CVEs 2 exploited

    linux-aws, 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: - ARM64 architecture; - Block layer subsystem; - ACPI drivers; - Drivers core; …

    first Feb 27, 2025