CVE Catalog

CVE-2026-72037

Low risk· EPSS 11%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

In the Linux kernel lan743x driver, a vulnerability exists due to using an uninitialized eth_syslock spinlock before initialization. lan743x_hardware_init() calls pci11x1x_strap_get_status(), which uses the spinlock, but it is initialized only after reading the strap status.

Risk Assessment

Using an uninitialized spinlock could lead to kernel panic or unpredictable behavior, especially with CONFIG_DEBUG_SPINLOCK enabled.

Recommendation

Apply a kernel update containing the fix that initializes the spinlock before reading the strap status.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: net: lan743x: Initialize eth_syslock spinlock before use lan743x_hardware_init() calls pci11x1x_strap_get_status() during the PCI11x1x probe sequence. That helper acquires the Ethernet subsystem hardware lock via lan743x_hs_syslock_acquire(), which relies on adapter->eth_syslock_spinlock to serialize access. The spinlock is currently initialized only after the strap status is read. With CONFIG_DEBUG_SPINLOCK enabled, taking the zeroed initialized spinlock can trip the spinlock debug check. Fix by initializing adapter->eth_syslock_spinlock before reading the strap status so the probe path never attempts to lock an uninitialized spinlock.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS