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Ubuntu Security Notices (USN)

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

8,435 results · Feed

  • Medium max 5.5
    USN-5513-1 19 CVEs

    linux-aws vulnerabilities

    Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. (CVE-2021-3609) Likang Luo discovered that…

    first Jul 13, 2022
  • Medium max 5.5
    USN-5505-1 19 CVEs

    linux-lts-xenial, linux-kvm vulnerabilities

    Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. (CVE-2021-3609) Likang Luo discovered that…

    first Jul 7, 2022
  • Medium max 5.5
    USN-5486-1 9 CVEs

    intel-microcode vulnerabilities

    It was discovered that some Intel processors did not implement sufficient control flow management. A local attacker could use this to cause a denial of service. (CVE-2021-0127) Joseph Nuzman discovered that some Intel processors did not properly initialise sh…

    first Jun 20, 2022
  • High max 7.5
    USN-5469-1 20 CVEs

    linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities

    It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499) Aaron Adams discovered that…

    first Jun 8, 2022
  • Medium max 6.7
    USN-5468-1 6 CVEs

    linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-intel-5.13, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities

    It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499) Aaron Adams discovered that…

    first Jun 8, 2022
  • Medium max 6.7
    USN-5466-1 8 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, linux-raspi2, linux-snapdragon vulnerabilities

    It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499) Aaron Adams discovered that…

    first Jun 8, 2022
  • Medium max 5.5
    USN-5416-1 5 CVEs

    linux-oem-5.14 vulnerabilities

    Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM implementation in the Linux kernel did not properly perform guest page table updates in some situations. An attacker in a guest vm could possibly use this to crash the host OS. (CVE-2022-1158) It…

    first May 12, 2022
  • Unscored
    USN-5415-1 8 CVEs

    linux, linux-aws, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-gkeop-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 vulnerabilities

    Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during device removal. A privileged or physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-27820) Ke Sun, Alyssa Milbur…

    first May 12, 2022
  • Unscored
    USN-5390-2 3 CVEs

    linux-raspi vulnerabilities

    David Bouman discovered that the netfilter subsystem in the Linux kernel did not properly validate passed user register indices. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-1015) David Bouman disc…

    first May 3, 2022
  • High max 7.8
    USN-5295-2 5 CVEs 1 exploited

    linux, linux-aws, linux-aws-5.13, linux-azure, linux-gcp, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities

    It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-22600) Jann …

    first Feb 22, 2022
  • Medium max 5.3
    USN-5560-2 13 CVEs 1 exploited

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

    Zhenpeng Lin discovered that the network packet scheduler implementation in the Linux kernel did not properly remove all references to a route filter before freeing it in some situations. A local attacker could use this to cause a denial of service (system cr…

    first Aug 10, 2022
  • Unscored
    USN-5383-1 8 CVEs

    linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities

    David Bouman discovered that the netfilter subsystem in the Linux kernel did not properly validate passed user register indices. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-1015) Brendan Dolan-Gav…

    first Apr 20, 2022
  • Medium max 5.5
    USN-5381-1 11 CVEs

    linux-oem-5.14 vulnerabilities

    David Bouman discovered that the netfilter subsystem in the Linux kernel did not properly validate passed user register indices. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-1015) It was discovered…

    first Apr 20, 2022
  • High max 7.8
    USN-5295-1 5 CVEs 1 exploited

    linux-hwe-5.13 vulnerabilities

    It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-22600) Jann …

    first Feb 18, 2022
  • Unscored
    USN-5572-1 3 CVEs

    linux-aws vulnerabilities

    Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memor…

    first Aug 18, 2022
  • Low max 3.3
    USN-5518-1 6 CVEs

    linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities

    It was discovered that the eBPF implementation in the Linux kernel did not properly prevent writes to kernel objects in BPF_BTF_LOAD commands. A privileged local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary…

    first Jul 14, 2022
  • High max 8.6
    USN-5377-1 15 CVEs 1 exploited

    linux-bluefield vulnerabilities

    It was discovered that the network traffic control 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-2022-1055) Yiq…

    first Apr 13, 2022
  • Critical max 9.1
    USN-5368-1 23 CVEs 1 exploited

    linux-azure-5.13, linux-oracle-5.13 vulnerabilities

    It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222) It was …

    first Apr 6, 2022
  • Critical max 9.1
    USN-5362-1 16 CVEs 3 exploited

    linux-intel-5.13 vulnerabilities

    Nick Gregory discovered that the Linux kernel incorrectly handled network offload functionality. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-25636) Enrico Barberis, Pietro Frigo, Marius Muench, He…

    first Apr 1, 2022
  • Unscored
    USN-5164-1 3 CVEs

    linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

    It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. …

    first Nov 30, 2021
  • Unscored
    USN-5162-1 5 CVEs

    linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem-5.13, linux-oracle, linux-raspi vulnerabilities

    Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655…

    first Nov 30, 2021
  • Unscored
    USN-5161-1 4 CVEs

    linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities

    Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655…

    first Nov 30, 2021
  • High max 7.8
    USN-5297-1 7 CVEs

    linux-gke, linux-gke-5.4 vulnerabilities

    Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial …

    first Feb 22, 2022
  • Critical max 9.1
    USN-5337-1 21 CVEs 1 exploited

    linux, linux-aws, linux-aws-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-kvm, linux-oracle, linux-raspi vulnerabilities

    It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222) Yiqi Su…

    first Mar 22, 2022
  • Medium max 5.5
    USN-5485-1 3 CVEs

    linux, linux-aws, linux-aws-hwe, linux-aws-5.13, linux-aws-5.4, linux-azure, linux-azure-4.15, linux-azure-5.13, linux-azure-5.4, linux-azure-fde, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-gcp-5.13, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe, linux-hwe-5.13, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-intel-5.13, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-oracle-5.13, linux-oracle-5.4 vulnerabilities

    It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21123) It was discovered that some Intel processors did n…

    first Jun 17, 2022
  • Unscored
    USN-5140-1 3 CVEs

    linux-oem-5.14 vulnerabilities

    It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3744, CVE-2021-3…

    first Nov 11, 2021
  • Unscored
    USN-5136-1 9 CVEs

    linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

    It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system c…

    first Nov 9, 2021
  • Unscored
    USN-5137-1 10 CVEs

    linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm vulnerabilities

    It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system c…

    first Nov 9, 2021
  • Unscored
    USN-5135-1 1 CVE

    linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerability

    It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion).

    first Nov 9, 2021
  • Unscored
    USN-5137-2 9 CVEs

    linux-bluefield, linux-gke-5.4, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities

    It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system c…

    first Nov 11, 2021
  • Unscored
    USN-5139-1 7 CVEs

    linux-oem-5.10 vulnerabilities

    Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655…

    first Nov 11, 2021
  • High max 8.7
    USN-5120-1 9 CVEs

    linux-azure-5.8 vulnerabilities

    It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system c…

    first Oct 21, 2021
  • Unscored
    USN-5115-1 16 CVEs

    linux-oem-5.10 vulnerabilities

    It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702) Ofek Kirzner, Adam Morrison, Benedict Schlueter, …

    first Oct 20, 2021
  • Unscored
    USN-5117-1 4 CVEs

    linux-oem-5.13 vulnerabilities

    It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739) It was discovered that the Qualcomm IPC Rou…

    first Oct 20, 2021
  • Critical max 9.8
    USN-8666-1 32 CVEs

    linux, linux-aws, linux-aws-5.4, linux-azure, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-oracle, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp vulnerabilities

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Aug 20, 2026
  • Critical max 9.8
    USN-8661-1 21 CVEs

    linux-azure-5.15, linux-gcp, linux-gcp-fips, linux-hwe-5.15, linux-lowlatency-hwe-5.15 vulnerabilities

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Aug 20, 2026
  • Critical max 9.8
    USN-8633-1 28 CVEs

    linux, linux-aws, linux-aws-fips, linux-azure-4.15, linux-azure-fips, linux-fips, linux-gcp-4.15, linux-gcp-fips, linux-kvm vulnerabilities

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Aug 12, 2026
  • Critical max 9.8
    USN-8715-1 37 CVEs

    linux-oracle-5.4 vulnerabilities

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Sep 2, 2026
  • Critical max 9.8
    USN-8667-1 37 CVEs

    linux-kvm vulnerabilities

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Aug 21, 2026
  • Critical max 9.8
    USN-8633-2 28 CVEs

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

    Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this…

    first Aug 13, 2026