CVE-2026-72037 (GCVE-0-2026-72037)
Vulnerability from cvelistv5
Published
2026-08-15 05:51
Modified
2026-08-17 05:07
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 Version: 46b777ad9a8c269113634cee6a380bc4e53f3964 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/microchip/lan743x_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "dfaefd9a7808736fcd2ed0de108f55c4badc15cc",
"status": "affected",
"version": "46b777ad9a8c269113634cee6a380bc4e53f3964",
"versionType": "git"
},
{
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"status": "affected",
"version": "46b777ad9a8c269113634cee6a380bc4e53f3964",
"versionType": "git"
},
{
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"status": "affected",
"version": "46b777ad9a8c269113634cee6a380bc4e53f3964",
"versionType": "git"
},
{
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"status": "affected",
"version": "46b777ad9a8c269113634cee6a380bc4e53f3964",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
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{
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/microchip/lan743x_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"lessThan": "6.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.5",
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},
{
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"versionEndExcluding": "7.2",
"versionStartIncluding": "6.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Initialize eth_syslock spinlock before use\n\nlan743x_hardware_init() calls pci11x1x_strap_get_status() during the\nPCI11x1x probe sequence. That helper acquires the Ethernet subsystem\nhardware lock via lan743x_hs_syslock_acquire(), which relies on\nadapter-\u003eeth_syslock_spinlock to serialize access.\n\nThe spinlock is currently initialized only after the strap status is\nread. With CONFIG_DEBUG_SPINLOCK enabled, taking the zeroed initialized\nspinlock can trip the spinlock debug check.\n\nFix by initializing adapter-\u003eeth_syslock_spinlock before reading the\nstrap status so the probe path never attempts to lock an uninitialized\nspinlock."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:07:02.911Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc"
},
{
"url": "https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687"
},
{
"url": "https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e"
},
{
"url": "https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4"
},
{
"url": "https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578"
},
{
"url": "https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0"
}
],
"title": "net: lan743x: Initialize eth_syslock spinlock before use",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-72037",
"datePublished": "2026-08-15T05:51:57.745Z",
"dateReserved": "2026-08-09T03:40:39.901Z",
"dateUpdated": "2026-08-17T05:07:02.911Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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