Medium 5.5Published Jan 14, 2026

CVE-2025-71114via_wdt: fix critical boot hang due to unnamed resource allocation

Updated under an hour ago (Oct 27, 2026, 7:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before 1d56025a3af50db0f3da2792f41eb9943eee5324; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before c7b986adc9e9336066350542ac5a2005d305ae78; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before 47c910965c936724070d2a8094a4c3ed8f452856; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before f7b6370d0fbee06a867037d675797a606cb62e57; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before c6a2dd4f2e4e6cbdfe7a1618160281af897b75db; from dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d before 7aa31ee9ec92915926e74731378c009c9cc04928	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.3.1 before 5.10.248; from 5.11 before 5.15.198; from 5.16 before 6.1.160; from 6.2 before 6.6.120; from 6.7 before 6.12.64; from 6.13 before 6.18.3; 3.3; 6.19; and 7 more ranges	NVD

References

References

https://git.kernel.org/stable/c/1d56025a3af50db0f3da2792f41eb9943eee5324	patch
https://git.kernel.org/stable/c/c7b986adc9e9336066350542ac5a2005d305ae78	patch
https://git.kernel.org/stable/c/47c910965c936724070d2a8094a4c3ed8f452856	patch
https://git.kernel.org/stable/c/d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d	patch
https://git.kernel.org/stable/c/f7b6370d0fbee06a867037d675797a606cb62e57	patch
https://git.kernel.org/stable/c/c6a2dd4f2e4e6cbdfe7a1618160281af897b75db	patch
https://git.kernel.org/stable/c/7aa31ee9ec92915926e74731378c009c9cc04928	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.