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platform/x86: think-lmi: Fix reference leak

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Fix reference leak If a duplicate attribute is found using kset_find_obj(), a reference to that attribute is returned which needs to be disposed accordingly using kobject_put(). Move the setting name validation into a separate function to allow for this change without having to duplicate the cleanup code for this setting. As a side note, a very similar bug was fixed in commit 7295a996fdab ("platform/x86: dell-sysman: Fix reference leak"), so it seems that the bug was copied from that driver. Compile-tested only.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.15.136, 6.1.59, 6.5.8
CVEs
CVE-2023-52520
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 16:59 UTC · Revision 1

Source evidence

platform/x86: think-lmi: Fix reference leak

core-osv · Original source

Published 2 Mar 2024, 21:52 UTC

In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Fix reference leak If a duplicate attribute is found using kset_find_obj(), a reference to that attribute is returned which needs to be disposed accordingly using kobject_put(). Move the setting name validation into a separate function to allow for this change without having to duplicate the cleanup code for this setting. As a side note, a very similar bug was fixed in commit 7295a996fdab ("platform/x86: dell-sysman: Fix reference leak"), so it seems that the bug was copied from that driver. Compile-tested only.

osv:CVE-2023-52520

Kernel

Fixed versions: 5.15.136, 6.1.59, 6.5.8

Complete source record
{
  "id": "1b85fd133ca08270f5ec8957b2cddeb14e1bd059498915da059432111265aa7a",
  "url": "https://osv.dev/vulnerability/CVE-2023-52520",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "platform/x86: think-lmi: Fix reference leak",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Fix reference leak If a duplicate attribute is found using kset_find_obj(), a reference to that attribute is returned which needs to be disposed accordingly using kobject_put(). Move the setting name validation into a separate function to allow for this change without having to duplicate the cleanup code for this setting. As a side note, a very similar bug was fixed in commit 7295a996fdab (\"platform/x86: dell-sysman: Fix reference leak\"), so it seems that the bug was copied from that driver. Compile-tested only.",
    "evidence": "osv:CVE-2023-52520",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.136",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.59",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-52520",
      "aliases": [
        "CVE-2023-52520"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1bcad8e510b27ad843315ab2c27ccf459e3acded"
                },
                {
                  "fixed": "124cf0ea4b82e1444ec8c7420af4e7db5558c293"
                },
                {
                  "fixed": "af21c9119a37cecb7ff27ce0c2f3cf721e9d0ec4"
                },
                {
                  "fixed": "c6e3023579de8d33256771ac0745239029e81106"
                },
                {
                  "fixed": "528ab3e605cabf2f9c9bd5944d3bfe15f6e94f81"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52520.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.14.0"
                },
                {
                  "fixed": "5.15.136"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.59"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.5.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52520.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.128251822Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/124cf0ea4b82e1444ec8c7420af4e7db5558c293",
        "https://git.kernel.org/stable/c/528ab3e605cabf2f9c9bd5944d3bfe15f6e94f81",
        "https://git.kernel.org/stable/c/af21c9119a37cecb7ff27ce0c2f3cf721e9d0ec4",
        "https://git.kernel.org/stable/c/c6e3023579de8d33256771ac0745239029e81106",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52520.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52520",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52520.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-52520",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505063,
  "published_at": "2024-03-02T21:52:28.434+00:00"
}