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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0 cve-icon cve-icon
https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687 cve-icon cve-icon
https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4 cve-icon cve-icon
https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e cve-icon cve-icon
https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578 cve-icon cve-icon
https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026081513-CVE-2026-72037-1c63@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-72037 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-72037 cve-icon
History

Tue, 18 Aug 2026 04:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Tue, 18 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-908
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Sat, 15 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
Description 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.
Title net: lan743x: Initialize eth_syslock spinlock before use
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-08-15T05:51:57.745Z

Updated: 2026-08-17T05:07:02.911Z

Reserved: 2026-08-09T03:40:39.901Z

Link: CVE-2026-72037

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:21:12.740

Modified: 2026-08-17T06:18:01.600

Link: CVE-2026-72037

cve-icon Redhat

Severity : Low

Publid Date: 2026-08-15T00:00:00Z

Links: CVE-2026-72037 - Bugzilla