CVE-2026-72037
net: lan743x: Initialize eth_syslock spinlock before use
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.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Initialize adapter->eth_syslock_spinlock before reading strap status.
- Apply the Linux kernel patch for the lan743x driver.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72037.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72037 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72037
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72037 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72037 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'dfaefd9a7808736fcd2ed0de108f55c4badc15cc', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '6523daa6852b1bfef32ec7a105b0217e8a115687', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b6a93a42e0e61f0ba0005a942ee3bffb16c0574e', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '99a6f37b113c46815deb160c5012073563679ef4', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b99e890e6b32ffa11c145a16fefcf2c7137a9578', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '39139b1c1c2b614096519b526112c726adb12ff0', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'dfaefd9a7808736fcd2ed0de108f55c4badc15cc', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '6523daa6852b1bfef32ec7a105b0217e8a115687', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b6a93a42e0e61f0ba0005a942ee3bffb16c0574e', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '99a6f37b113c46815deb160c5012073563679ef4', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b99e890e6b32ffa11c145a16fefcf2c7137a9578', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '39139b1c1c2b614096519b526112c726adb12ff0', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'dfaefd9a7808736fcd2ed0de108f55c4badc15cc', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '6523daa6852b1bfef32ec7a105b0217e8a115687', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b6a93a42e0e61f0ba0005a942ee3bffb16c0574e', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '99a6f37b113c46815deb160c5012073563679ef4', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': 'b99e890e6b32ffa11c145a16fefcf2c7137a9578', 'versionType': 'git'}, {'status': 'affected', 'version': '46b777ad9a8c269113634cee6a380bc4e53f3964', 'lessThan': '39139b1c1c2b614096519b526112c726adb12ff0', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/lan743x_main.c'], 'defaultStatus': 'affected'}] 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. Added Reference https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0 Added Reference https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687 Added Reference https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4 Added Reference https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e Added Reference https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578 Added Reference https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc