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In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: u_serial: Add null pointer check in gserial_resume
Consider a case where gserial_disconnect has already cleared gser->ioport. And if a wakeup interrupt triggers afterwards, gserial_resume gets called, which will lead to accessing of gser->ioport and thus causing null pointer dereference.Add a null pointer check to prevent this.
Added a static spinlock to prevent gser->ioport from becoming null after the newly added check.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Oct 6, 2025 | Oct 6, 2025 |
| Ubuntu | — | Upgrade linux-realtimeUpgrade linux-raspiUpgrade linux-azure-fdeUpgrade linux-aws-5.15Upgrade linuxUpgrade linux-lowlatency-hwe-5.15Upgrade linux-awsUpgrade linux-gcpUpgrade linux-nvidia-tegra-5.15Upgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-ibmUpgrade linux-oracleUpgrade linux-intel-iot-realtimeUpgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-nvidiaUpgrade linux-kvmUpgrade linux-lowlatencyUpgrade linux-azureUpgrade linux-riscv-5.15Upgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-oracle-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.15 | Oct 10, 2025 | Oct 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 4, 2025 |
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