github - ghsa-r9h8-qv2j-9qwp

GHSA-R9H8-QV2J-9QWP

Vulnerability from github – Published: 2025-07-09 12:31 – Updated: 2025-11-19 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

cxl/ras: Fix CPER handler device confusion

By inspection, cxl_cper_handle_prot_err() is making a series of fragile assumptions that can lead to crashes:

1/ It assumes that endpoints identified in the record are a CXL-type-3 device, nothing guarantees that.

2/ It assumes that the device is bound to the cxl_pci driver, nothing guarantees that.

3/ Minor, it holds the device lock over the switch-port tracing for no reason as the trace is 100% generated from data in the record.

Correct those by checking that the PCIe endpoint parents a cxl_memdev before assuming the format of the driver data, and move the lock to where it is required. Consequently this also makes the implementation ready for CXL accelerators that are not bound to cxl_pci.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38252"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-09T11:15:27Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/ras: Fix CPER handler device confusion\n\nBy inspection, cxl_cper_handle_prot_err() is making a series of fragile\nassumptions that can lead to crashes:\n\n1/ It assumes that endpoints identified in the record are a CXL-type-3\n   device, nothing guarantees that.\n\n2/ It assumes that the device is bound to the cxl_pci driver, nothing\n   guarantees that.\n\n3/ Minor, it holds the device lock over the switch-port tracing for no\n   reason as the trace is 100% generated from data in the record.\n\nCorrect those by checking that the PCIe endpoint parents a cxl_memdev\nbefore assuming the format of the driver data, and move the lock to where\nit is required. Consequently this also makes the implementation ready for\nCXL accelerators that are not bound to cxl_pci.",
  "id": "GHSA-r9h8-qv2j-9qwp",
  "modified": "2025-11-19T21:31:15Z",
  "published": "2025-07-09T12:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38252"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bcb8dd36e9e3fad6c22862ac5b6993df838309b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38252 (GCVE-0-2025-38252)

Vulnerability from cvelistv5 – Published: 2025-07-09 10:42 – Updated: 2025-07-28 04:16

Summary

In the Linux kernel, the following vulnerability has been resolved: cxl/ras: Fix CPER handler device confusion By inspection, cxl_cper_handle_prot_err() is making a series of fragile assumptions that can lead to crashes: 1/ It assumes that endpoints identified in the record are a CXL-type-3 device, nothing guarantees that. 2/ It assumes that the device is bound to the cxl_pci driver, nothing guarantees that. 3/ Minor, it holds the device lock over the switch-port tracing for no reason as the trace is 100% generated from data in the record. Correct those by checking that the PCIe endpoint parents a cxl_memdev before assuming the format of the driver data, and move the lock to where it is required. Consequently this also makes the implementation ready for CXL accelerators that are not bound to cxl_pci.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/4bcb8dd36e9e3fad6…
	https://git.kernel.org/stable/c/3c70ec71abdaf4e4f…

Impacted products

Vendor

Product

Version

Linux

Affected: 36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c , < 4bcb8dd36e9e3fad6c22862ac5b6993df838309b (git)
Affected: 36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c , < 3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8 (git)

Linux

Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.5 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/ras.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4bcb8dd36e9e3fad6c22862ac5b6993df838309b",
              "status": "affected",
              "version": "36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c",
              "versionType": "git"
            },
            {
              "lessThan": "3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8",
              "status": "affected",
              "version": "36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/ras.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.5",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/ras: Fix CPER handler device confusion\n\nBy inspection, cxl_cper_handle_prot_err() is making a series of fragile\nassumptions that can lead to crashes:\n\n1/ It assumes that endpoints identified in the record are a CXL-type-3\n   device, nothing guarantees that.\n\n2/ It assumes that the device is bound to the cxl_pci driver, nothing\n   guarantees that.\n\n3/ Minor, it holds the device lock over the switch-port tracing for no\n   reason as the trace is 100% generated from data in the record.\n\nCorrect those by checking that the PCIe endpoint parents a cxl_memdev\nbefore assuming the format of the driver data, and move the lock to where\nit is required. Consequently this also makes the implementation ready for\nCXL accelerators that are not bound to cxl_pci."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:16:15.177Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/4bcb8dd36e9e3fad6c22862ac5b6993df838309b"
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        {
          "url": "https://git.kernel.org/stable/c/3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8"
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      "title": "cxl/ras: Fix CPER handler device confusion",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38252",
    "datePublished": "2025-07-09T10:42:31.477Z",
    "dateReserved": "2025-04-16T04:51:23.997Z",
    "dateUpdated": "2025-07-28T04:16:15.177Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-R9H8-QV2J-9QWP

CVE-2025-38252 (GCVE-0-2025-38252)

Tags

Sightings

Nomenclature