🛡️ CVE-2026-53384 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails dw8250_probe() registers the 8250 port via serial8250_register_8250_port() and then, if the device has a clock, registers a clock notifier. If clk_notifier_register() fails, probe returns the error but leaves the 8250 port registered. The matching serial8250_unregister_port() lives in dw8250_remove(), which is not called when probe fails, so the port slot stays occupied until the device is rebound or the system is rebooted. The devm-allocated driver data is freed while the port still references it (via the saved private_data and serial_in/serial_out callbacks), so any access to that port slot before a rebind is a use-after-free hazard. Unregister the port on the clk_notifier_register() error path.

Distribution advisory

This page covers CVE-2026-53384 as tracked by Ubuntu, for the package linux. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

UBUNTU-CVE-2026-53384 is recorded against 150 packages.

  • linux
  • linux-allwinner-5.19
  • linux-aws
  • linux-aws-5.0
  • linux-aws-5.11
  • linux-aws-5.13
  • linux-aws-5.15
  • linux-aws-5.19
  • linux-aws-5.3
  • linux-aws-5.8
  • linux-aws-6.14
  • linux-aws-6.17
  • linux-aws-6.2
  • linux-aws-6.5
  • linux-aws-6.8
  • linux-aws-fips
  • linux-azure
  • linux-azure-5.11
  • linux-azure-5.13
  • linux-azure-5.15
  • linux-azure-5.19
  • linux-azure-5.3
  • linux-azure-5.8
  • linux-azure-6.11
Show the remaining 126 packages
  • linux-azure-6.14
  • linux-azure-6.17
  • linux-azure-6.2
  • linux-azure-6.5
  • linux-azure-6.8
  • linux-azure-edge
  • linux-azure-fde
  • linux-azure-fde-5.15
  • linux-azure-fde-5.19
  • linux-azure-fde-6.14
  • linux-azure-fde-6.17
  • linux-azure-fde-6.2
  • linux-azure-fde-6.8
  • linux-azure-fips
  • linux-azure-nvidia
  • linux-azure-nvidia-6.14
  • linux-bluefield
  • linux-fips
  • linux-gcp
  • linux-gcp-5.11
  • linux-gcp-5.13
  • linux-gcp-5.15
  • linux-gcp-5.19
  • linux-gcp-5.3
  • linux-gcp-5.8
  • linux-gcp-6.11
  • linux-gcp-6.14
  • linux-gcp-6.17
  • linux-gcp-6.2
  • linux-gcp-6.5
  • linux-gcp-6.8
  • linux-gcp-fips
  • linux-gke
  • linux-gke-4.15
  • linux-gke-5.15
  • linux-gke-5.4
  • linux-gkeop
  • linux-gkeop-5.15
  • linux-gkeop-5.4
  • linux-hwe
  • linux-hwe-5.11
  • linux-hwe-5.13
  • linux-hwe-5.15
  • linux-hwe-5.19
  • linux-hwe-5.8
  • linux-hwe-6.11
  • linux-hwe-6.14
  • linux-hwe-6.17
  • linux-hwe-6.2
  • linux-hwe-6.5
  • linux-hwe-6.8
  • linux-hwe-7.0
  • linux-hwe-edge
  • linux-ibm
  • linux-ibm-5.15
  • linux-ibm-6.8
  • linux-intel-5.13
  • linux-intel-iot-realtime
  • linux-intel-iotg
  • linux-intel-iotg-5.15
  • linux-kvm
  • linux-lowlatency
  • linux-lowlatency-hwe-5.15
  • linux-lowlatency-hwe-5.19
  • linux-lowlatency-hwe-6.11
  • linux-lowlatency-hwe-6.2
  • linux-lowlatency-hwe-6.5
  • linux-lowlatency-hwe-6.8
  • linux-nvidia
  • linux-nvidia-6.11
  • linux-nvidia-6.17
  • linux-nvidia-6.2
  • linux-nvidia-6.5
  • linux-nvidia-6.8
  • linux-nvidia-7.0
  • linux-nvidia-bos
  • linux-nvidia-lowlatency
  • linux-nvidia-tegra
  • linux-nvidia-tegra-5.15
  • linux-nvidia-tegra-igx
  • linux-oem
  • linux-oem-5.10
  • linux-oem-5.13
  • linux-oem-5.14
  • linux-oem-5.17
  • linux-oem-5.6
  • linux-oem-6.0
  • linux-oem-6.1
  • linux-oem-6.11
  • linux-oem-6.14
  • linux-oem-6.17
  • linux-oem-6.5
  • linux-oem-6.8
  • linux-oem-7.0
  • linux-oracle
  • linux-oracle-5.0
  • linux-oracle-5.11
  • linux-oracle-5.13
  • linux-oracle-5.15
  • linux-oracle-5.3
  • linux-oracle-5.8
  • linux-oracle-6.14
  • linux-oracle-6.17
  • linux-oracle-6.5
  • linux-oracle-6.8
  • linux-raspi
  • linux-raspi-realtime
  • linux-raspi2
  • linux-realtime
  • linux-realtime-6.14
  • linux-realtime-6.17
  • linux-realtime-6.8
  • linux-riscv
  • linux-riscv-5.11
  • linux-riscv-5.15
  • linux-riscv-5.19
  • linux-riscv-5.8
  • linux-riscv-6.14
  • linux-riscv-6.17
  • linux-riscv-6.5
  • linux-riscv-6.8
  • linux-starfive-5.19
  • linux-starfive-6.2
  • linux-starfive-6.5
  • linux-xilinx
  • linux-xilinx-zynqmp

Timeline and source

Published on 19 July 2026 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-19
Updated 2026-08-12
Modified 2026-08-11
Fix URL N/A

Affected Packages

Software From version Fixed in
linux — —
linux-allwinner-5.19 — —
linux-aws — —
linux-aws-5.0 — —
linux-aws-5.11 — —
linux-aws-5.13 — —
linux-aws-5.15 — —
linux-aws-5.19 — —
linux-aws-5.3 — —
linux-aws-5.8 — —
linux-aws-6.14 — —
linux-aws-6.17 — —
linux-aws-6.2 — —
linux-aws-6.5 — —
linux-aws-6.8 — —
linux-aws-fips — —
linux-azure — —
linux-azure-5.11 — —
linux-azure-5.13 — —
linux-azure-5.15 — —
linux-azure-5.19 — —
linux-azure-5.3 — —
linux-azure-5.8 — —
linux-azure-6.11 — —
linux-azure-6.14 — —
linux-azure-6.17 — —
linux-azure-6.2 — —
linux-azure-6.5 — —
linux-azure-6.8 — —
linux-azure-edge — —
linux-azure-fde — —
linux-azure-fde-5.15 — —
linux-azure-fde-5.19 — —
linux-azure-fde-6.14 — —
linux-azure-fde-6.17 — —
linux-azure-fde-6.2 — —
linux-azure-fde-6.8 — —
linux-azure-fips — —
linux-azure-nvidia — —
linux-azure-nvidia-6.14 — —
linux-bluefield — —
linux-fips — —
linux-gcp — —
linux-gcp-5.11 — —
linux-gcp-5.13 — —
linux-gcp-5.15 — —
linux-gcp-5.19 — —
linux-gcp-5.3 — —
linux-gcp-5.8 — —
linux-gcp-6.11 — —
linux-gcp-6.14 — —
linux-gcp-6.17 — —
linux-gcp-6.2 — —
linux-gcp-6.5 — —
linux-gcp-6.8 — —
linux-gcp-fips — —
linux-gke — —
linux-gke-4.15 — —
linux-gke-5.15 — —
linux-gke-5.4 — —
linux-gkeop — —
linux-gkeop-5.15 — —
linux-gkeop-5.4 — —
linux-hwe — —
linux-hwe-5.11 — —
linux-hwe-5.13 — —
linux-hwe-5.15 — —
linux-hwe-5.19 — —
linux-hwe-5.8 — —
linux-hwe-6.11 — —
linux-hwe-6.14 — —
linux-hwe-6.17 — —
linux-hwe-6.2 — —
linux-hwe-6.5 — —
linux-hwe-6.8 — —
linux-hwe-7.0 — —
linux-hwe-edge — —
linux-ibm — —
linux-ibm-5.15 — —
linux-ibm-6.8 — —
linux-intel-5.13 — —
linux-intel-iot-realtime — —
linux-intel-iotg — —
linux-intel-iotg-5.15 — —
linux-kvm — —
linux-lowlatency — —
linux-lowlatency-hwe-5.15 — —
linux-lowlatency-hwe-5.19 — —
linux-lowlatency-hwe-6.11 — —
linux-lowlatency-hwe-6.2 — —
linux-lowlatency-hwe-6.5 — —
linux-lowlatency-hwe-6.8 — —
linux-nvidia — —
linux-nvidia-6.11 — —
linux-nvidia-6.17 — —
linux-nvidia-6.2 — —
linux-nvidia-6.5 — —
linux-nvidia-6.8 — —
linux-nvidia-7.0 — —
linux-nvidia-bos — —
linux-nvidia-lowlatency — —
linux-nvidia-tegra — —
linux-nvidia-tegra-5.15 — —
linux-nvidia-tegra-igx — —
linux-oem — —
linux-oem-5.10 — —
linux-oem-5.13 — —
linux-oem-5.14 — —
linux-oem-5.17 — —
linux-oem-5.6 — —
linux-oem-6.0 — —
linux-oem-6.1 — —
linux-oem-6.11 — —
linux-oem-6.14 — —
linux-oem-6.17 — —
linux-oem-6.5 — —
linux-oem-6.8 — —
linux-oem-7.0 — —
linux-oracle — —
linux-oracle-5.0 — —
linux-oracle-5.11 — —
linux-oracle-5.13 — —
linux-oracle-5.15 — —
linux-oracle-5.3 — —
linux-oracle-5.8 — —
linux-oracle-6.14 — —
linux-oracle-6.17 — —
linux-oracle-6.5 — —
linux-oracle-6.8 — —
linux-raspi — —
linux-raspi-realtime — —
linux-raspi2 — —
linux-realtime — —
linux-realtime-6.14 — —
linux-realtime-6.17 — —
linux-realtime-6.8 — —
linux-riscv — —
linux-riscv-5.11 — —
linux-riscv-5.15 — —
linux-riscv-5.19 — —
linux-riscv-5.8 — —
linux-riscv-6.14 — —
linux-riscv-6.17 — —
linux-riscv-6.5 — —
linux-riscv-6.8 — —
linux-starfive-5.19 — —
linux-starfive-6.2 — —
linux-starfive-6.5 — —
linux-xilinx — —
linux-xilinx-zynqmp — —

Similar Threats

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