CVE-2025-71114
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel VIA watchdog driver (via_wdt), a vulnerability causes a critical system hang during boot. The issue arises because the allocated MMIO resource lacks a name, resulting in a "<BAD>" entry in the kernel resource tree.
Risk Assessment
The organization faces the risk of complete system hang during boot, preventing servers and workstations using the via_wdt driver from starting. This can lead to downtime and loss of service availability.
Recommendation
Immediately update the Linux kernel to a version containing the fix that assigns a name to the allocated MMIO resource in the via_wdt driver. A system reboot is required after the update.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: via_wdt: fix critical boot hang due to unnamed resource allocation The VIA watchdog driver uses allocate_resource() to reserve a MMIO region for the watchdog control register. However, the allocated resource was not given a name, which causes the kernel resource tree to contain an entry marked as "<BAD>" under /proc/iomem on x86 platforms. During boot, this unnamed resource can lead to a critical hang because subsequent resource lookups and conflict checks fail to handle the invalid entry properly.