Vulnerability-Lookup

GHSA-MFGV-XHQX-F8X7

Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2026-01-20 18:31

Details

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

cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()

KASAN and KFENCE detected an user-after-free in the CXL driver. This happens in the cxl_decoder_add() fail path. KASAN prints the following error:

BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)

This happens in cxl_parse_cfmws(), where put_device() is called, releasing cxld, which is accessed later.

Use the local variables in the dev_err() instead of pointing to the released memory. Since the dev_err() is printing a resource, change the open coded print format to use the %pr format specifier.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53479"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:50Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/acpi: Fix a use-after-free in cxl_parse_cfmws()\n\nKASAN and KFENCE detected an user-after-free in the CXL driver. This\nhappens in the cxl_decoder_add() fail path. KASAN prints the following\nerror:\n\n   BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)\n\nThis happens in cxl_parse_cfmws(), where put_device() is called,\nreleasing cxld, which is accessed later.\n\nUse the local variables in the dev_err() instead of pointing to the\nreleased memory. Since the dev_err() is printing a resource, change the open\ncoded print format to use the %pr format specifier.",
  "id": "GHSA-mfgv-xhqx-f8x7",
  "modified": "2026-01-20T18:31:52Z",
  "published": "2025-10-01T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53479"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/316db489647b8ddc381682597e89787eac61a278"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/748fadc08bcbdaf573b34d9784bb3dbd87441dbf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-53479 (GCVE-0-2023-53479)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-05-11 19:45

Title

cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()

Summary

In the Linux kernel, the following vulnerability has been resolved: cxl/acpi: Fix a use-after-free in cxl_parse_cfmws() KASAN and KFENCE detected an user-after-free in the CXL driver. This happens in the cxl_decoder_add() fail path. KASAN prints the following error: BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299) This happens in cxl_parse_cfmws(), where put_device() is called, releasing cxld, which is accessed later. Use the local variables in the dev_err() instead of pointing to the released memory. Since the dev_err() is printing a resource, change the open coded print format to use the %pr format specifier.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/748fadc08bcbdaf57…
https://git.kernel.org/stable/c/316db489647b8ddc3…
https://git.kernel.org/stable/c/4cf67d3cc9994a59c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e50fe01e1f2a4aba2275edee7d5c77ac87674ddb , < 748fadc08bcbdaf573b34d9784bb3dbd87441dbf (git) Affected: e50fe01e1f2a4aba2275edee7d5c77ac87674ddb , < 316db489647b8ddc381682597e89787eac61a278 (git) Affected: e50fe01e1f2a4aba2275edee7d5c77ac87674ddb , < 4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe (git)
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.43 , ≤ 6.1.* (semver) Unaffected: 6.4.8 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/acpi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "748fadc08bcbdaf573b34d9784bb3dbd87441dbf",
              "status": "affected",
              "version": "e50fe01e1f2a4aba2275edee7d5c77ac87674ddb",
              "versionType": "git"
            },
            {
              "lessThan": "316db489647b8ddc381682597e89787eac61a278",
              "status": "affected",
              "version": "e50fe01e1f2a4aba2275edee7d5c77ac87674ddb",
              "versionType": "git"
            },
            {
              "lessThan": "4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe",
              "status": "affected",
              "version": "e50fe01e1f2a4aba2275edee7d5c77ac87674ddb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/acpi.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": "6.1.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.43",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.8",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/acpi: Fix a use-after-free in cxl_parse_cfmws()\n\nKASAN and KFENCE detected an user-after-free in the CXL driver. This\nhappens in the cxl_decoder_add() fail path. KASAN prints the following\nerror:\n\n   BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)\n\nThis happens in cxl_parse_cfmws(), where put_device() is called,\nreleasing cxld, which is accessed later.\n\nUse the local variables in the dev_err() instead of pointing to the\nreleased memory. Since the dev_err() is printing a resource, change the open\ncoded print format to use the %pr format specifier."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:45:46.984Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/748fadc08bcbdaf573b34d9784bb3dbd87441dbf"
        },
        {
          "url": "https://git.kernel.org/stable/c/316db489647b8ddc381682597e89787eac61a278"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cf67d3cc9994a59cf77bb9c0ccf9007fe916afe"
        }
      ],
      "title": "cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53479",
    "datePublished": "2025-10-01T11:42:47.987Z",
    "dateReserved": "2025-10-01T11:39:39.401Z",
    "dateUpdated": "2026-05-11T19:45:46.984Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

Action not permitted

GHSA-MFGV-XHQX-F8X7

CVE-2023-53479 (GCVE-0-2023-53479)

Tags

Sightings

Nomenclature