Linux Kernel via_wdt Unnamed Resource Causing Boot Hang
CVE-2025-71114 Published on January 14, 2026
via_wdt: fix critical boot hang due to unnamed resource allocation
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.
Products Associated with CVE-2025-71114
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Affected Versions
Linux:- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below 1d56025a3af50db0f3da2792f41eb9943eee5324 is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below c7b986adc9e9336066350542ac5a2005d305ae78 is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below 47c910965c936724070d2a8094a4c3ed8f452856 is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below f7b6370d0fbee06a867037d675797a606cb62e57 is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below c6a2dd4f2e4e6cbdfe7a1618160281af897b75db is affected.
- Version dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d and below 7aa31ee9ec92915926e74731378c009c9cc04928 is affected.
- Version 3.3 is affected.
- Before 3.3 is unaffected.
- Version 5.10.248, <= 5.10.* is unaffected.
- Version 5.15.198, <= 5.15.* is unaffected.
- Version 6.1.160, <= 6.1.* is unaffected.
- Version 6.6.120, <= 6.6.* is unaffected.
- Version 6.12.64, <= 6.12.* is unaffected.
- Version 6.18.3, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.