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CVE-2023-53719: Linux kernels for AWS/Azure may leak memory resources

CVE-2023-53719 · published 1 year ago
Summary

The Linux operating system versions used on Amazon AWS, Microsoft Azure, and certain Ubuntu releases could leave a piece of memory allocated when a communication device fails to start. This unused memory can build up over time, potentially slowing or destabilizing the system. Apply the latest kernel updates for those Ubuntu releases to ensure the leak is corrected.

What to do
  • Update canonical linux-aws-5.4 to version 5.4.0-1109.118~18.04.1.
  • Update canonical linux-azure-5.4 to version 5.4.0-1115.122~18.04.1.
  • Update canonical linux-gcp-5.4 to version 5.4.0-1112.121~18.04.1.
  • Update canonical linux-hwe-5.4 to version 5.4.0-162.179~18.04.1.
  • Update canonical linux-ibm-5.4 to version 5.4.0-1056.61~18.04.1.
  • Update canonical linux-oracle-5.4 to version 5.4.0-1108.117~18.04.1.
  • Update canonical linux-raspi-5.4 to version 5.4.0-1093.104~18.04.1.
  • Update canonical linux to version 5.4.0-162.179.
  • Update canonical linux-aws to version 5.4.0-1109.118.
  • Update canonical linux-aws-5.15 to version 5.15.0-1044.49~20.04.1.
  • Update canonical linux-azure to version 5.4.0-1115.122.
  • Update canonical linux-azure-5.15 to version 5.15.0-1046.53~20.04.1.
  • Update canonical linux-bluefield to version 5.4.0-1070.76.
  • Update canonical linux-gcp to version 5.4.0-1112.121.
  • Update canonical linux-gcp-5.15 to version 5.15.0-1041.49~20.04.1.
  • Update canonical linux-hwe-5.15 to version 5.15.0-83.92~20.04.1.
  • Update canonical linux-ibm to version 5.4.0-1056.61.
  • Update canonical linux-ibm-5.15 to version 5.15.0-1037.40~20.04.1.
  • Update canonical linux-intel-iotg-5.15 to version 5.15.0-1040.46~20.04.1.
  • Update canonical linux-iot to version 5.4.0-1021.22.
  • Update canonical linux-kvm to version 5.4.0-1098.104.
  • Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-83.92~20.04.1.
  • Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1017.17~20.04.1.
  • Update canonical linux-oracle to version 5.4.0-1108.117.
  • Update canonical linux-oracle-5.15 to version 5.15.0-1042.48~20.04.1.
  • Update canonical linux-raspi to version 5.4.0-1093.104.
  • Update canonical linux-riscv-5.15 to version 5.15.0-1040.44~20.04.3.
  • Update canonical linux-xilinx-zynqmp to version 5.4.0-1029.33.
  • Update canonical linux-aws-fips to version 5.4.0-1109.118+fips1.
  • Update canonical linux-azure-fips to version 5.4.0-1115.122+fips1.
  • Update canonical linux-fips to version 5.4.0-1084.93.
  • Update canonical linux-gcp-fips to version 5.4.0-1112.121+fips1.
  • Update canonical linux to version 5.15.0-83.92.
  • Update canonical linux-aws to version 5.15.0-1044.49.
  • Update canonical linux-azure to version 5.15.0-1046.53.
  • Update canonical linux-gcp to version 5.15.0-1041.49.
  • Update canonical linux-gke to version 5.15.0-1041.46.
  • Update canonical linux-gkeop to version 5.15.0-1027.32.
  • Update canonical linux-ibm to version 5.15.0-1037.40.
  • Update canonical linux-intel-iotg to version 5.15.0-1039.45.
  • Update canonical linux-kvm to version 5.15.0-1041.46.
  • Update canonical linux-lowlatency to version 5.15.0-83.92.
  • Update canonical linux-nvidia to version 5.15.0-1032.32.
  • Update canonical linux-nvidia-tegra to version 5.15.0-1017.17.
  • Update canonical linux-nvidia-tegra-igx to version 5.15.0-1004.4.
  • Update canonical linux-oracle to version 5.15.0-1042.48.
  • Update canonical linux-raspi to version 5.15.0-1037.40.
  • Update canonical linux-xilinx-zynqmp to version 5.15.0-1025.29.
  • Update canonical linux-bluefield to version 5.15.0-1023.25.
  • Update canonical linux-intel-iot-realtime to version 5.15.0-1038.40.
  • Update canonical linux-realtime to version 5.15.0-1045.50.
  • Update debian linux to version 6.1.37-1.
  • Update debian linux to version 6.3.7-1.
  • Update canonical linux-azure-fde to version 5.15.0-1046.53.1.
  • Update linux kernel to version 6.3.4.
Affected software
Ecosystem VendorProductAffected versions
Ubuntu:Pro:14.04:LTS canonical linux-aws All versions
Ubuntu:Pro:14.04:LTS canonical linux-azure All versions
Ubuntu:Pro:14.04:LTS canonical linux-lts-xenial All versions
Ubuntu:Pro:16.04:LTS canonical linux All versions
Ubuntu:Pro:16.04:LTS canonical linux-aws-hwe All versions
Ubuntu:Pro:16.04:LTS canonical linux-gcp All versions
Ubuntu:Pro:16.04:LTS canonical linux-hwe All versions
Ubuntu:16.04:LTS canonical linux-hwe-edge All versions
Ubuntu:Pro:16.04:LTS canonical linux-kvm All versions
Ubuntu:Pro:16.04:LTS canonical linux-oracle All versions
Ubuntu:Pro:FIPS:16.04:LTS canonical linux-fips All versions
Ubuntu:18.04:LTS canonical linux-aws-5.0 All versions
Ubuntu:18.04:LTS canonical linux-aws-5.3 All versions
Ubuntu:Pro:18.04:LTS canonical linux-aws-5.4 < 5.4.0-1109.118~18.04.1
Fix: upgrade to 5.4.0-1109.118~18.04.1
Ubuntu:Pro:18.04:LTS canonical linux-azure-4.15 All versions
Ubuntu:18.04:LTS canonical linux-azure-5.3 All versions
Ubuntu:Pro:18.04:LTS canonical linux-azure-5.4 < 5.4.0-1115.122~18.04.1
Fix: upgrade to 5.4.0-1115.122~18.04.1
Ubuntu:18.04:LTS canonical linux-azure-edge All versions
Ubuntu:Pro:18.04:LTS canonical linux-gcp-4.15 All versions
Ubuntu:18.04:LTS canonical linux-gcp-5.3 All versions
Ubuntu:Pro:18.04:LTS canonical linux-gcp-5.4 < 5.4.0-1112.121~18.04.1
Fix: upgrade to 5.4.0-1112.121~18.04.1
Ubuntu:18.04:LTS canonical linux-gke-4.15 All versions
Ubuntu:18.04:LTS canonical linux-gke-5.4 All versions
Ubuntu:18.04:LTS canonical linux-gkeop-5.4 All versions
Ubuntu:Pro:18.04:LTS canonical linux-hwe-5.4 < 5.4.0-162.179~18.04.1
Fix: upgrade to 5.4.0-162.179~18.04.1
Ubuntu:Pro:18.04:LTS canonical linux-ibm-5.4 < 5.4.0-1056.61~18.04.1
Fix: upgrade to 5.4.0-1056.61~18.04.1
Ubuntu:18.04:LTS canonical linux-oem All versions
Ubuntu:18.04:LTS canonical linux-oracle-5.0 All versions
Ubuntu:18.04:LTS canonical linux-oracle-5.3 All versions
Ubuntu:Pro:18.04:LTS canonical linux-oracle-5.4 < 5.4.0-1108.117~18.04.1
Fix: upgrade to 5.4.0-1108.117~18.04.1
Ubuntu:Pro:18.04:LTS canonical linux-raspi-5.4 < 5.4.0-1093.104~18.04.1
Fix: upgrade to 5.4.0-1093.104~18.04.1
Ubuntu:Pro:FIPS-updates:18.04:LTS canonical linux-aws-fips All versions
Ubuntu:Pro:FIPS-updates:18.04:LTS canonical linux-azure-fips All versions
Ubuntu:Pro:FIPS-updates:18.04:LTS canonical linux-gcp-fips All versions
Ubuntu:20.04:LTS canonical linux < 5.4.0-162.179
Fix: upgrade to 5.4.0-162.179
Ubuntu:20.04:LTS canonical linux-aws < 5.4.0-1109.118
Fix: upgrade to 5.4.0-1109.118
Ubuntu:20.04:LTS canonical linux-aws-5.15 < 5.15.0-1044.49~20.04.1
Fix: upgrade to 5.15.0-1044.49~20.04.1
Ubuntu:20.04:LTS canonical linux-azure < 5.4.0-1115.122
Fix: upgrade to 5.4.0-1115.122
Ubuntu:20.04:LTS canonical linux-azure-5.15 < 5.15.0-1046.53~20.04.1
Fix: upgrade to 5.15.0-1046.53~20.04.1
Ubuntu:20.04:LTS canonical linux-bluefield < 5.4.0-1070.76
Fix: upgrade to 5.4.0-1070.76
Ubuntu:20.04:LTS canonical linux-gcp < 5.4.0-1112.121
Fix: upgrade to 5.4.0-1112.121
Ubuntu:20.04:LTS canonical linux-gcp-5.15 < 5.15.0-1041.49~20.04.1
Fix: upgrade to 5.15.0-1041.49~20.04.1
Ubuntu:20.04:LTS canonical linux-hwe-5.15 < 5.15.0-83.92~20.04.1
Fix: upgrade to 5.15.0-83.92~20.04.1
Ubuntu:20.04:LTS canonical linux-ibm < 5.4.0-1056.61
Fix: upgrade to 5.4.0-1056.61
Ubuntu:20.04:LTS canonical linux-ibm-5.15 < 5.15.0-1037.40~20.04.1
Fix: upgrade to 5.15.0-1037.40~20.04.1
Ubuntu:20.04:LTS canonical linux-intel-iotg-5.15 < 5.15.0-1040.46~20.04.1
Fix: upgrade to 5.15.0-1040.46~20.04.1
Ubuntu:20.04:LTS canonical linux-iot < 5.4.0-1021.22
Fix: upgrade to 5.4.0-1021.22
Ubuntu:20.04:LTS canonical linux-kvm < 5.4.0-1098.104
Fix: upgrade to 5.4.0-1098.104
Ubuntu:20.04:LTS canonical linux-lowlatency-hwe-5.15 < 5.15.0-83.92~20.04.1
Fix: upgrade to 5.15.0-83.92~20.04.1
Ubuntu:20.04:LTS canonical linux-nvidia-tegra-5.15 < 5.15.0-1017.17~20.04.1
Fix: upgrade to 5.15.0-1017.17~20.04.1
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Ecosystem VendorProductAffected versions
Ubuntu:20.04:LTS canonical linux-oracle < 5.4.0-1108.117
Fix: upgrade to 5.4.0-1108.117
Ubuntu:20.04:LTS canonical linux-oracle-5.15 < 5.15.0-1042.48~20.04.1
Fix: upgrade to 5.15.0-1042.48~20.04.1
Ubuntu:20.04:LTS canonical linux-raspi < 5.4.0-1093.104
Fix: upgrade to 5.4.0-1093.104
Ubuntu:20.04:LTS canonical linux-riscv-5.15 < 5.15.0-1040.44~20.04.3
Fix: upgrade to 5.15.0-1040.44~20.04.3
Ubuntu:20.04:LTS canonical linux-xilinx-zynqmp < 5.4.0-1029.33
Fix: upgrade to 5.4.0-1029.33
Ubuntu:20.04:LTS canonical linux-aws-5.11 All versions
Ubuntu:20.04:LTS canonical linux-aws-5.13 All versions
Ubuntu:20.04:LTS canonical linux-aws-5.8 All versions
Ubuntu:20.04:LTS canonical linux-azure-5.11 All versions
Ubuntu:20.04:LTS canonical linux-azure-5.13 All versions
Ubuntu:20.04:LTS canonical linux-azure-5.8 All versions
Ubuntu:20.04:LTS canonical linux-azure-fde All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.11 All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.13 All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.8 All versions
Ubuntu:20.04:LTS canonical linux-gke All versions
Ubuntu:20.04:LTS canonical linux-gke-5.15 All versions
Ubuntu:20.04:LTS canonical linux-gkeop All versions
Ubuntu:20.04:LTS canonical linux-gkeop-5.15 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.11 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.13 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.8 All versions
Ubuntu:20.04:LTS canonical linux-intel-5.13 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.10 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.13 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.14 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.6 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.11 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.13 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.8 All versions
Ubuntu:20.04:LTS canonical linux-raspi2 All versions
Ubuntu:20.04:LTS canonical linux-riscv All versions
Ubuntu:20.04:LTS canonical linux-riscv-5.11 All versions
Ubuntu:20.04:LTS canonical linux-riscv-5.8 All versions
Ubuntu:Pro:FIPS-updates:20.04:LTS canonical linux-aws-fips < 5.4.0-1109.118+fips1
Fix: upgrade to 5.4.0-1109.118+fips1
Ubuntu:Pro:FIPS-updates:20.04:LTS canonical linux-azure-fips < 5.4.0-1115.122+fips1
Fix: upgrade to 5.4.0-1115.122+fips1
Ubuntu:Pro:FIPS-updates:20.04:LTS canonical linux-fips < 5.4.0-1084.93
Fix: upgrade to 5.4.0-1084.93
Ubuntu:Pro:FIPS-updates:20.04:LTS canonical linux-gcp-fips < 5.4.0-1112.121+fips1
Fix: upgrade to 5.4.0-1112.121+fips1
Ubuntu:22.04:LTS canonical linux < 5.15.0-83.92
Fix: upgrade to 5.15.0-83.92
Ubuntu:22.04:LTS canonical linux-allwinner-5.19 All versions
Ubuntu:22.04:LTS canonical linux-aws < 5.15.0-1044.49
Fix: upgrade to 5.15.0-1044.49
Ubuntu:22.04:LTS canonical linux-aws-5.19 All versions
Ubuntu:22.04:LTS canonical linux-aws-6.2 All versions
Ubuntu:22.04:LTS canonical linux-aws-6.5 All versions
Ubuntu:22.04:LTS canonical linux-azure < 5.15.0-1046.53
Fix: upgrade to 5.15.0-1046.53
Ubuntu:22.04:LTS canonical linux-azure-5.19 All versions
Ubuntu:22.04:LTS canonical linux-azure-6.2 All versions
Ubuntu:22.04:LTS canonical linux-azure-6.5 All versions
Ubuntu:22.04:LTS canonical linux-azure-fde-5.19 All versions
Ubuntu:22.04:LTS canonical linux-azure-fde-6.2 All versions
Ubuntu:22.04:LTS canonical linux-gcp < 5.15.0-1041.49
Fix: upgrade to 5.15.0-1041.49
Ubuntu:22.04:LTS canonical linux-gcp-5.19 All versions
Ubuntu:22.04:LTS canonical linux-gcp-6.2 All versions
Ubuntu:22.04:LTS canonical linux-gcp-6.5 All versions
Ubuntu:22.04:LTS canonical linux-gke < 5.15.0-1041.46
Fix: upgrade to 5.15.0-1041.46
Ubuntu:22.04:LTS canonical linux-gkeop < 5.15.0-1027.32
Fix: upgrade to 5.15.0-1027.32
Ubuntu:22.04:LTS canonical linux-hwe-5.19 All versions
Ubuntu:22.04:LTS canonical linux-hwe-6.2 All versions
Ubuntu:22.04:LTS canonical linux-hwe-6.5 All versions
Ubuntu:22.04:LTS canonical linux-ibm < 5.15.0-1037.40
Fix: upgrade to 5.15.0-1037.40
Ubuntu:22.04:LTS canonical linux-intel-iot-realtime All versions
Ubuntu:22.04:LTS canonical linux-intel-iotg < 5.15.0-1039.45
Fix: upgrade to 5.15.0-1039.45
Ubuntu:22.04:LTS canonical linux-kvm < 5.15.0-1041.46
Fix: upgrade to 5.15.0-1041.46
Ubuntu:22.04:LTS canonical linux-lowlatency < 5.15.0-83.92
Fix: upgrade to 5.15.0-83.92
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-5.19 All versions
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-6.2 All versions
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-6.5 All versions
Ubuntu:22.04:LTS canonical linux-nvidia < 5.15.0-1032.32
Fix: upgrade to 5.15.0-1032.32
Ubuntu:22.04:LTS canonical linux-nvidia-6.2 All versions
Ubuntu:22.04:LTS canonical linux-nvidia-6.5 All versions
Ubuntu:22.04:LTS canonical linux-nvidia-tegra < 5.15.0-1017.17
Fix: upgrade to 5.15.0-1017.17
Ubuntu:22.04:LTS canonical linux-nvidia-tegra-igx < 5.15.0-1004.4
Fix: upgrade to 5.15.0-1004.4
Ubuntu:22.04:LTS canonical linux-oem-5.17 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.0 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.1 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.5 All versions
Ubuntu:22.04:LTS canonical linux-oracle < 5.15.0-1042.48
Fix: upgrade to 5.15.0-1042.48
Ubuntu:22.04:LTS canonical linux-oracle-6.5 All versions
Ubuntu:22.04:LTS canonical linux-raspi < 5.15.0-1037.40
Fix: upgrade to 5.15.0-1037.40
Ubuntu:22.04:LTS canonical linux-realtime All versions
Ubuntu:22.04:LTS canonical linux-riscv-5.19 All versions
Ubuntu:22.04:LTS canonical linux-riscv-6.5 All versions
Ubuntu:22.04:LTS canonical linux-starfive-5.19 All versions
Ubuntu:22.04:LTS canonical linux-starfive-6.2 All versions
Ubuntu:22.04:LTS canonical linux-starfive-6.5 All versions
Ubuntu:22.04:LTS canonical linux-xilinx-zynqmp < 5.15.0-1025.29
Fix: upgrade to 5.15.0-1025.29
Ubuntu:Nvidia-BlueField:22.04:LTS canonical linux-bluefield < 5.15.0-1023.25
Fix: upgrade to 5.15.0-1023.25
Ubuntu:Pro:Realtime:22.04:LTS canonical linux-intel-iot-realtime < 5.15.0-1038.40
Fix: upgrade to 5.15.0-1038.40
Ubuntu:Pro:Realtime:22.04:LTS canonical linux-realtime < 5.15.0-1045.50
Fix: upgrade to 5.15.0-1045.50
Ubuntu:24.04:LTS canonical linux-azure-6.11 All versions
Ubuntu:24.04:LTS canonical linux-gcp-6.11 All versions
Ubuntu:24.04:LTS canonical linux-hwe-6.11 All versions
Ubuntu:24.04:LTS canonical linux-lowlatency-hwe-6.11 All versions
Ubuntu:24.04:LTS canonical linux-oem-6.11 All versions
Ubuntu:24.04:LTS canonical linux-oem-6.8 All versions
Ubuntu:24.04:LTS canonical linux-raspi-realtime All versions
Debian:12 debian linux < 6.1.37-1
Fix: upgrade to 6.1.37-1
Debian:13 debian linux < 6.3.7-1
Fix: upgrade to 6.3.7-1
Ubuntu:22.04:LTS canonical linux-azure-fde < 5.15.0-1046.53.1
Fix: upgrade to 5.15.0-1046.53.1
Linux linux kernel >= 6.2.0, < 6.3.4
Fix: upgrade to 6.3.4
Original advisory text
serial: arc_uart: fix of_iomap leak in `arc_serial_probe`
In the Linux kernel, the following vulnerability has been resolved: serial: arc_uart: fix of_iomap leak in `arc_serial_probe` Smatch reports: drivers/tty/serial/arc_uart.c:631 arc_serial_probe() warn: 'port->membase' from of_iomap() not released on lines: 631. In arc_serial_probe(), if uart_add_one_port() fails, port->membase is not released, which would cause a resource leak. To fix this, I replace of_iomap with devm_platform_ioremap_resource.
Exploitation
<1% chance of attack within 30 days
Timeline
Published22 Oct 2025
Updated3 Nov 2026
First seen7 Mar 2026
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