Threats Tagged 'cve-2026-64038'

A security update for the SUSE Linux Enterprise 15 SP7 RT kernel addresses multiple security vulnerabilities across various kernel components, including hardware monitoring, Bluetooth, SCSI, networking, tracing, and more. These fixes resolve issues such as null pointer dereferences, memory leaks, use-after-free, out-of-bounds reads/writes, race conditions, and other kernel-level bugs. The update mitigates a broad range of potential security risks by correcting these defects.

In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Stop work before releasing hwmon device Sashiko reports: In lm90_probe(), the devm action to cancel the alert_work and report_work (lm90_restore_conf) is registered in lm90_init_client() before devm_hwmon_device_register_with_info() is called. Because devm executes cleanup actions in reverse order during module unbind or probe failure, the hwmon device is unregistered and freed first. If lm90_alert_work() or lm90_report_alarms() runs in the window between the hwmon device being freed and the delayed works being cancelled, lm90_update_alarms() will dereference the freed data->hwmon_dev here. Fix the problem by canceling the workers separately after registering the hwmon device and before registering the interrupt handler. This ensures that the workers are canceled after interrupts are disabled and before the hwmon device is released. Add "shutdown" flag to indicate that device shutdown is in progress to prevent workers from being re-armed.

A use-after-free vulnerability in the Linux kernel's hwmon lm90 driver was resolved. The issue occurred because delayed work tasks could run after the hwmon device was freed but before the work was canceled, leading to dereferencing freed memory. The fix involves canceling the workers after registering the hwmon device and before registering the interrupt handler, and adding a shutdown flag to prevent re-arming of workers during device shutdown.