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Ubuntu Security Notices (USN)

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

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  • Critical max 10.0
    USN-8875-1 951 CVEs 1 exploited

    linux, linux-aws, linux-aws-5.15, linux-aws-fips, linux-azure, linux-azure-5.15, linux-azure-fde-5.15, linux-azure-fips, linux-fips, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-realtime, linux-xilinx-zynqmp vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8963-1 2016 CVEs 1 exploited

    linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx vulnerabilities

    Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux kernel, leading to use-after-free vulnerabilities. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1205) It…

    first Nov 3, 2026
  • Critical max 10.0
    USN-8728-3 1417 CVEs 2 exploited

    linux-oracle-7.0 vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 29, 2026
  • Critical max 10.0
    USN-8876-1 722 CVEs 1 exploited

    linux-azure-fde vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8877-1 952 CVEs 1 exploited

    linux-gcp, linux-gcp-fips vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8879-1 972 CVEs 1 exploited

    linux-oracle-5.15 vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8878-1 973 CVEs 1 exploited

    linux-gcp-5.15 vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8875-2 951 CVEs 1 exploited

    linux-nvidia vulnerabilities

    It was discovered that the i.MX clock driver in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (…

    first Oct 9, 2026
  • Critical max 10.0
    USN-8728-1 1417 CVEs 2 exploited

    linux-gcp-7.0 vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 7, 2026
  • Critical max 10.0
    USN-8728-2 1417 CVEs 2 exploited

    linux-azure-7.0 vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 22, 2026
  • Critical max 9.8
    USN-8569-1 698 CVEs 1 exploited

    linux-hwe-7.0 vulnerabilities

    It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. (CVE-2025-54505) It was discovered that some AMD Zen 2 pro…

    first Jul 20, 2026
  • High max 8.8
    USN-8373-1 21 CVEs 1 exploited

    linux, linux-aws, linux-aws-6.8, linux-aws-fips, linux-azure, linux-fips, linux-gcp, linux-gcp-6.8, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-nvidia-tegra, linux-oracle, linux-oracle-6.8, linux-raspi, linux-raspi-realtime, linux-realtime, linux-realtime-6.8 vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jun 2, 2026
  • Critical max 9.8
    USN-8489-1 165 CVEs 1 exploited

    linux-oem-7.0 vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jul 1, 2026
  • High max 8.8
    USN-8461-1 18 CVEs 1 exploited

    linux-azure vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jun 22, 2026
  • Critical max 9.8
    USN-8440-1 393 CVEs 2 exploited

    linux-azure-6.8 vulnerabilities

    Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issu…

    first Jun 16, 2026
  • High max 8.8
    USN-8371-1 18 CVEs 1 exploited

    linux, linux-aws, linux-azure, linux-azure-6.17, linux-hwe-6.17, linux-nvidia-6.17, linux-oem-6.17, linux-oracle, linux-oracle-6.17, linux-raspi, linux-realtime, linux-realtime-6.17 vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jun 2, 2026
  • Critical max 9.8
    USN-8374-1 40 CVEs 2 exploited

    linux-aws-6.17, linux-gcp, linux-gcp-6.17 vulnerabilities

    It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) It w…

    first Jun 2, 2026
  • High max 8.8
    USN-8370-1 17 CVEs 1 exploited

    linux, linux-aws, linux-gcp, linux-ibm, linux-nvidia, linux-oracle, linux-raspi, linux-realtime vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jun 2, 2026
  • Critical max 9.8
    USN-8499-1 516 CVEs 2 exploited

    linux-xilinx vulnerabilities

    It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) It w…

    first Jul 2, 2026
  • Critical max 9.8
    USN-8497-1 321 CVEs 1 exploited

    linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities

    It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processin…

    first Jul 2, 2026
  • Critical max 9.8
    USN-8393-1 218 CVEs 2 exploited

    linux-azure-fips vulnerabilities

    It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) It w…

    first Jun 4, 2026
  • Critical max 10.0
    USN-8917-1 1050 CVEs 1 exploited

    linux, linux-aws, linux-aws-fips, linux-fips, linux-gcp, linux-gcp-fips, linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-oracle, linux-realtime vulnerabilities

    It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromi…

    first Oct 13, 2026
  • Critical max 10.0
    USN-8726-1 551 CVEs 2 exploited

    linux, linux-aws, linux-aws-7.0, linux-gcp, linux-gke, linux-hwe-7.0, linux-realtime vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 7, 2026
  • High max 8.8
    USN-8903-2 232 CVEs 1 exploited

    linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, 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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - x86 architec…

    first Oct 9, 2026
  • High max 8.8
    USN-8903-1 232 CVEs 1 exploited

    linux, linux-aws, linux-aws-6.8, linux-aws-fips, linux-fips, linux-realtime, 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; - MIPS architecture; - x86 architec…

    first Oct 8, 2026
  • Critical max 9.8
    USN-8904-1 234 CVEs 1 exploited

    linux-azure, linux-azure-6.8, linux-azure-fde, linux-azure-fde-6.8, 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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - x86 architec…

    first Oct 8, 2026
  • Critical max 10.0
    USN-8918-1 1049 CVEs 1 exploited

    linux-azure, linux-azure-fde, linux-azure-fips vulnerabilities

    It was discovered that some AMD processors did not properly perform Reverse Map Table (RMP) checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromi…

    first Oct 13, 2026
  • Critical max 10.0
    USN-8726-4 551 CVEs 2 exploited

    linux-azure, linux-oracle vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 22, 2026
  • Critical max 9.8
    USN-8905-1 233 CVEs 1 exploited

    linux-gcp-6.8, 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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - x86 architec…

    first Oct 8, 2026
  • Critical max 10.0
    USN-8760-2 550 CVEs 2 exploited

    linux-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: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 a…

    first Sep 22, 2026
  • Critical max 9.8
    USN-8906-1 349 CVEs 1 exploited

    linux-ibm-6.8 vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Oct 8, 2026
  • Critical max 9.8
    USN-8905-2 233 CVEs 1 exploited

    linux-gcp 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; - MIPS architecture; - x86 architec…

    first Oct 9, 2026
  • Critical max 10.0
    USN-8886-1 684 CVEs 1 exploited

    linux-nvidia-tegra 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: - NVDIMM (Non-Volatile Memory Device) drivers; - Handshake API; - ARM32 archite…

    first Oct 6, 2026
  • Critical max 10.0
    USN-8800-1 552 CVEs 2 exploited

    linux-nvidia-bos 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: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 a…

    first Sep 22, 2026
  • Critical max 10.0
    USN-8760-1 550 CVEs 2 exploited

    linux-nvidia-7.0 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: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 a…

    first Sep 15, 2026
  • Critical max 10.0
    USN-8781-1 527 CVEs 1 exploited

    linux-nvidia-tegra vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 18, 2026
  • Critical max 10.0
    USN-8726-3 551 CVEs 2 exploited

    linux-ibm vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 21, 2026
  • Critical max 10.0
    USN-8726-2 551 CVEs 2 exploited

    linux-raspi vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 18, 2026
  • Critical max 10.0
    USN-8727-1 547 CVEs 2 exploited

    linux-oem-7.0 vulnerabilities

    It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to me…

    first Sep 7, 2026
  • High max 7.8
    USN-8441-1 6 CVEs 1 exploited

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

    It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431) Seve…

    first Jun 17, 2026