Vulnerability-Lookup

GHSA-XCMW-C2XM-XXJW

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-25 15:31

Details

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

thermal: core: Reference count the zone in thermal_zone_get_by_id()

There are places in the thermal netlink code where nothing prevents the thermal zone object from going away while being accessed after it has been returned by thermal_zone_get_by_id().

To address this, make thermal_zone_get_by_id() get a reference on the thermal zone device object to be returned with the help of get_device(), under thermal_list_lock, and adjust all of its callers to this change with the help of the cleanup.h infrastructure.

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-2024-50028"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: core: Reference count the zone in thermal_zone_get_by_id()\n\nThere are places in the thermal netlink code where nothing prevents\nthe thermal zone object from going away while being accessed after it\nhas been returned by thermal_zone_get_by_id().\n\nTo address this, make thermal_zone_get_by_id() get a reference on the\nthermal zone device object to be returned with the help of get_device(),\nunder thermal_list_lock, and adjust all of its callers to this change\nwith the help of the cleanup.h infrastructure.",
  "id": "GHSA-xcmw-c2xm-xxjw",
  "modified": "2024-10-25T15:31:26Z",
  "published": "2024-10-21T21:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50028"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a42a5839f400e929c489bb1b58f54596c4535167"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c95538b286efc6109c987e97a051bc7844ede802"
    }
  ],
  "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-2024-50028 (GCVE-0-2024-50028)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-08-05 11:41

Title

thermal: core: Reference count the zone in thermal_zone_get_by_id()

Summary

In the Linux kernel, the following vulnerability has been resolved: thermal: core: Reference count the zone in thermal_zone_get_by_id() There are places in the thermal netlink code where nothing prevents the thermal zone object from going away while being accessed after it has been returned by thermal_zone_get_by_id(). To address this, make thermal_zone_get_by_id() get a reference on the thermal zone device object to be returned with the help of get_device(), under thermal_list_lock, and adjust all of its callers to this change with the help of the cleanup.h infrastructure.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:26 UTC

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/c95538b286efc6109…
https://git.kernel.org/stable/c/a42a5839f400e929c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00 , < c95538b286efc6109c987e97a051bc7844ede802 (git) Affected: 1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00 , < a42a5839f400e929c489bb1b58f54596c4535167 (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 6.11.4 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-50028",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:26:28.280587Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:28:46.203Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/thermal/thermal_core.c",
            "drivers/thermal/thermal_core.h",
            "drivers/thermal/thermal_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c95538b286efc6109c987e97a051bc7844ede802",
              "status": "affected",
              "version": "1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00",
              "versionType": "git"
            },
            {
              "lessThan": "a42a5839f400e929c489bb1b58f54596c4535167",
              "status": "affected",
              "version": "1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/thermal/thermal_core.c",
            "drivers/thermal/thermal_core.h",
            "drivers/thermal/thermal_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.4",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: core: Reference count the zone in thermal_zone_get_by_id()\n\nThere are places in the thermal netlink code where nothing prevents\nthe thermal zone object from going away while being accessed after it\nhas been returned by thermal_zone_get_by_id().\n\nTo address this, make thermal_zone_get_by_id() get a reference on the\nthermal zone device object to be returned with the help of get_device(),\nunder thermal_list_lock, and adjust all of its callers to this change\nwith the help of the cleanup.h infrastructure."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable handlers are reached through the thermal generic-netlink family via a local AF_NETLINK socket, not from any remote peer. Per kernel scoring guidance, netlink-reachable code is Local.\nAC:L - The attacker fully controls and can continuously repeat the read side (unlimited TZ_GET_TEMP/TRIP/GOV requests from many threads), and the free side leaves a very wide window (list_del under thermal_list_lock, then cancel_delayed_work_sync, device_del and wait_for_completion before kfree), so a zone teardown from any routine event (driver/module removal, device hot-unplug, power-supply/charger removal, CPU hotplug or suspend/resume) is reliably won; the stale pointer can also be held across preemption.\nPR:L - The thermal genl ops carry no GENL_ADMIN_PERM or GENL_UNS_ADMIN_PERM flag, so genl_family_rcv_msg() applies no capability check \u2014 any unprivileged local user can open NETLINK_GENERIC and issue these commands with an arbitrary zone id.\nUI:N - Exploitation is entirely driven by the attacker\u0027s own netlink requests plus a concurrent zone teardown; no victim action is needed at any point.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Contents of the freed thermal_zone_device are copied directly back to the attacker in the netlink reply \u2014 trip temperatures/types, the governor name via a stale tz-\u003egovernor pointer dereference, and a trip loop bounded by num_trips read from freed memory, giving an effectively unbounded heap read primitive after reclaim.\nI:H - The handlers write into the freed object (mutex_lock on tz-\u003elock) and, in the GET_TEMP path, make an indirect call through tz-\u003eops.get_temp read out of freed slab memory, which after a heap spray yields attacker-controlled control-flow hijack and arbitrary kernel modification.\nA:H - Even unweaponized, dereferencing and locking the freed thermal zone (and calling a stale ops pointer) causes memory corruption and kernel oops/panic, repeatable at will by an unprivileged process."
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:41:04.376Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "url": "https://git.kernel.org/stable/c/a42a5839f400e929c489bb1b58f54596c4535167"
        }
      ],
      "title": "thermal: core: Reference count the zone in thermal_zone_get_by_id()",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50028",
    "datePublished": "2024-10-21T19:39:31.809Z",
    "dateReserved": "2024-10-21T12:17:06.066Z",
    "dateUpdated": "2026-08-05T11:41:04.376Z",
    "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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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