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Ubuntu Security Notices (USN)

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

8,409 results · Feed

  • 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
  • Critical max 9.8
    USN-7765-1 102 CVEs

    linux-nvidia, linux-nvidia-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: - ARM32 architecture; - ARM64 architecture; - x86 architecture; - Compute Accel…

    first Sep 24, 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-7766-1 101 CVEs

    linux-aws-6.8, 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: - ARM32 architecture; - ARM64 architecture; - x86 architecture; - Compute Accel…

    first Sep 24, 2025
  • Critical max 9.8
    USN-7767-2 101 CVEs

    linux-realtime-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: - ARM32 architecture; - ARM64 architecture; - x86 architecture; - Compute Accel…

    first Sep 25, 2025
  • Critical max 9.8
    USN-7790-1 100 CVEs

    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; - x86 architecture; - Compute Acceleration Framework; - B…

    first Oct 1, 2025
  • Critical max 9.8
    USN-7779-1 107 CVEs

    linux-ibm, linux-ibm-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: - ARM32 architecture; - ARM64 architecture; - x86 architecture; - Compute Accel…

    first Sep 25, 2025
  • Critical max 9.8
    USN-7767-1 101 CVEs

    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: - ARM32 architecture; - ARM64 architecture; - x86 architecture; - Compute Accel…

    first Sep 24, 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
  • Critical max 9.8
    USN-7703-3 70 CVEs

    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: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - Block layer…

    first Aug 21, 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
  • Critical max 9.8
    USN-7651-3 117 CVEs

    linux-aws-6.8, linux-gke, linux-gkeop, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, 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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 22, 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
  • Critical max 9.8
    USN-7651-2 117 CVEs

    linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 18, 2025
  • Critical max 9.8
    USN-7595-1 33 CVEs

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

    It was discovered that the CIFS network file system implementation in the Linux kernel did not properly verify the target namespace when handling upcalls. An attacker could use this to expose sensitive information. (CVE-2025-2312) Several security issues were…

    first Jun 24, 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-7651-4 117 CVEs

    linux-gcp, 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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 22, 2025
  • Critical max 9.8
    USN-7651-6 117 CVEs

    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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 24, 2025
  • Critical max 9.8
    USN-7652-1 117 CVEs

    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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 17, 2025
  • Critical max 9.8
    USN-7651-5 117 CVEs

    linux-raspi-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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 24, 2025
  • Critical max 9.8
    USN-7521-1 228 CVEs

    linux, linux-azure, linux-azure-6.11, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oem-6.11, 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: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - Block layer…

    first May 20, 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
  • Critical max 9.8
    USN-7595-4 33 CVEs

    linux-oracle, linux-oracle-6.8, linux-raspi vulnerabilities

    It was discovered that the CIFS network file system implementation in the Linux kernel did not properly verify the target namespace when handling upcalls. An attacker could use this to expose sensitive information. (CVE-2025-2312) Several security issues were…

    first Jun 26, 2025
  • Critical max 9.8
    USN-7516-6 90 CVEs

    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; - PowerPC architecture; - Block layer subsystem; - Driver…

    first May 26, 2025
  • Critical max 10.0
    USN-7522-1 136 CVEs

    linux-azure-nvidia 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: - RISC-V architecture; - x86 architecture; - Block layer subsystem; - Compute A…

    first May 20, 2025
  • Critical max 9.8
    USN-7521-3 228 CVEs

    linux-lowlatency, linux-lowlatency-hwe-6.11, 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; - PowerPC architecture; - x86 architecture; - Block layer…

    first May 28, 2025
  • Critical max 9.8
    USN-7517-2 93 CVEs

    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; - PowerPC architecture; - Block layer subsystem; - Driver…

    first May 21, 2025
  • Critical max 9.8
    USN-7516-9 90 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: - ARM64 architecture; - PowerPC architecture; - Block layer subsystem; - Driver…

    first May 29, 2025
  • Critical max 9.8
    USN-7651-1 117 CVEs

    linux, linux-aws, linux-oem-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: - PowerPC architecture; - S390 architecture; - Block layer subsystem; - Serial …

    first Jul 17, 2025