CVE-2024-36932 (GCVE-0-2024-36932)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:29 – Updated: 2026-05-11 20:17
VLAI
Title
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
Summary
In the Linux kernel, the following vulnerability has been resolved: thermal/debugfs: Prevent use-after-free from occurring after cdev removal Since thermal_debug_cdev_remove() does not run under cdev->lock, it can run in parallel with thermal_debug_cdev_state_update() and it may free the struct thermal_debugfs object used by the latter after it has been checked against NULL. If that happens, thermal_debug_cdev_state_update() will access memory that has been freed already causing the kernel to crash. Address this by using cdev->lock in thermal_debug_cdev_remove() around the cdev->debugfs value check (in case the same cdev is removed at the same time in two different threads) and its reset to NULL. Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-07 14:04 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 755113d7678681a137c330f7997ceb680adb644e , < c1279dee33369e2525f532364bb87207d23b9481 (git)
Affected: 755113d7678681a137c330f7997ceb680adb644e , < d351eb0ab04c3e8109895fc33250cebbce9c11da (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 755113d76786 , < c1279dee3336 (custom)
Affected: 755113d76786 , < d351eb0ab04c (custom)
Affected: 6.8
Unaffected: 0 , < 6.8 (custom)
Unaffected: 6.8.10
Unaffected: 6.9
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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      "product_status:known_affected": "0",
      "product_status:known_not_affected": "378",
      "product_status:recommended": "47",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-36932",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2024/cve-2024-36932.json",
      "version": "21"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "affected": [
              {
                "cpes": [
                  "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
                ],
                "defaultStatus": "unknown",
                "product": "linux_kernel",
                "vendor": "linux",
                "versions": [
                  {
                    "lessThan": "c1279dee3336",
                    "status": "affected",
                    "version": "755113d76786",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "d351eb0ab04c",
                    "status": "affected",
                    "version": "755113d76786",
                    "versionType": "custom"
                  },
                  {
                    "status": "affected",
                    "version": "6.8"
                  },
                  {
                    "lessThan": "6.8",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "custom"
                  },
                  {
                    "status": "unaffected",
                    "version": "6.8.10"
                  },
                  {
                    "status": "unaffected",
                    "version": "6.9"
                  }
                ]
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-36932",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-06-07T14:04:33.823483Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-06-07T14:06:44.119Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/thermal/thermal_debugfs.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "c1279dee3336",
                  "status": "affected",
                  "version": "755113d76786",
                  "versionType": "git"
                },
                {
                  "lessThan": "d351eb0ab04c",
                  "status": "affected",
                  "version": "755113d76786",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/thermal/thermal_debugfs.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.8"
                },
                {
                  "lessThan": "6.8",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.10",
                  "versionType": "custom"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.9",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Prevent use-after-free from occurring after cdev removal\n\nSince thermal_debug_cdev_remove() does not run under cdev-\u003elock, it can\nrun in parallel with thermal_debug_cdev_state_update() and it may free\nthe struct thermal_debugfs object used by the latter after it has been\nchecked against NULL.\n\nIf that happens, thermal_debug_cdev_state_update() will access memory\nthat has been freed already causing the kernel to crash.\n\nAddress this by using cdev-\u003elock in thermal_debug_cdev_remove() around\nthe cdev-\u003edebugfs value check (in case the same cdev is removed at the\nsame time in two different threads) and its reset to NULL.\n\nCc :6.8+ \u003cstable@vger.kernel.org\u003e # 6.8+"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-05-30T15:29:23.178Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481"
            },
            {
              "url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da"
            }
          ],
          "title": "thermal/debugfs: Prevent use-after-free from occurring after cdev removal",
          "x_generator": {
            "engine": "bippy-a5840b7849dd"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-36932",
        "datePublished": "2024-05-30T15:29:23.178Z",
        "dateReserved": "2024-05-30T15:25:07.071Z",
        "dateUpdated": "2024-06-07T14:06:48.074Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Vulnerability timeline

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