In the Linux kernel, the following vulnerability has been resolved:
serial: 8250: Fix oops for port->pm on uart_change_pm()
Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm().
Turns out commit 04e82793f068 ("serial: 8250: Reinit port->pm on port specific driver unbind") was only a partial fix. If the hardware specific driver has initialized port->pm function, we need to clear port->pm too. Just reinitializing port->ops does not do this. Otherwise serial8250_pm() will call port->pm() instead of serial8250_do_pm().
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.15.128-80.144Upgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-livepatch-4.14.326-245.539Upgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-5.10.192-182.736Upgrade kernelUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpfUpgrade kernel-livepatch-6.1.49-69.116Upgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perfUpgrade python3-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade perf | Feb 20, 2026 | Dec 30, 2025 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-ibm-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-raspiUpgrade linuxUpgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-riscv-5.15Upgrade linux-bluefieldUpgrade linux-fipsUpgrade linux-gkeUpgrade linux-oracle-5.15Upgrade linux-azure-fdeUpgrade linux-lowlatencyUpgrade linux-aws-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-aws-5.4Upgrade linux-intel-iotgUpgrade linux-nvidia-tegraUpgrade linux-gkeopUpgrade linux-aws-fipsUpgrade linux-awsUpgrade linux-nvidiaUpgrade linux-nvidia-tegra-igxUpgrade linux-ibmUpgrade linux-azure-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-gcp-5.4Upgrade linux-gcp-5.15Upgrade linux-raspi-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-azure-5.15Upgrade linux-kvmUpgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-iotUpgrade linux-xilinx-zynqmpUpgrade linux-azureUpgrade linux-azure-fipsUpgrade linux-gcp-fipsUpgrade linux-gcp | Jan 6, 2026 | Jan 2, 2026 |
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