Vulnerability-Lookup

GHSA-57RG-9QX8-7V7G

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72037"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:12Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-57rg-9qx8-7v7g",
  "modified": "2026-08-15T06:32:10Z",
  "published": "2026-08-15T06:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72037"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72037 (GCVE-0-2026-72037)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-17 05:07

Title

net: lan743x: Initialize eth_syslock spinlock before use

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/dfaefd9a7808736fc…
https://git.kernel.org/stable/c/6523daa6852b1bfef…
https://git.kernel.org/stable/c/b6a93a42e0e61f0ba…
https://git.kernel.org/stable/c/99a6f37b113c46815…
https://git.kernel.org/stable/c/b99e890e6b32ffa11…
https://git.kernel.org/stable/c/39139b1c1c2b61409…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < dfaefd9a7808736fcd2ed0de108f55c4badc15cc (git) Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < 6523daa6852b1bfef32ec7a105b0217e8a115687 (git) Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < b6a93a42e0e61f0ba0005a942ee3bffb16c0574e (git) Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < 99a6f37b113c46815deb160c5012073563679ef4 (git) Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < b99e890e6b32ffa11c145a16fefcf2c7137a9578 (git) Affected: 46b777ad9a8c269113634cee6a380bc4e53f3964 , < 39139b1c1c2b614096519b526112c726adb12ff0 (git)
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan743x_main.c"
          ],
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          "versions": [
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              "versionType": "git"
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              "versionType": "git"
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              "status": "affected",
              "version": "46b777ad9a8c269113634cee6a380bc4e53f3964",
              "versionType": "git"
            }
          ]
        },
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          ],
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              "version": "6.0"
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              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
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            {
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              "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"
            },
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              "status": "unaffected",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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          "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"
      },
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          "url": "https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc"
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        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0"
        }
      ],
      "title": "net: lan743x: Initialize eth_syslock spinlock before use",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "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"
  },
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-57RG-9QX8-7V7G

CVE-2026-72037 (GCVE-0-2026-72037)

Tags

Sightings

Nomenclature