Vulnerability-Lookup

CNVD-2025-05314

Vulnerability from cnvd - Published: 2025-03-18

Title

Linux kernel释放后重用漏洞（CNVD-2025-05314）

Description

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在释放后重用漏洞，该漏洞源于未设置设备释放函数，可能导致释放后重用。攻击者可利用该漏洞造成内存破坏从而改变进程行为。

Severity

中

Patch Name

Linux kernel释放后重用漏洞的补丁

Patch Description

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在释放后重用漏洞，该漏洞源于未设置设备释放函数，可能导致释放后重用。攻击者可利用该漏洞造成内存破坏从而改变进程行为。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新：https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-21856

Impacted products

Name
['Linux Linux kernel 6.14', 'Linux Linux kernel >=6.13，<6.13.5', 'Linux Linux kernel >=6.7，<6.12.17', 'Linux Linux kernel >=6.3，<6.6.80']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-21856",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-21856"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel\u5b58\u5728\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u8bbe\u7f6e\u8bbe\u5907\u91ca\u653e\u51fd\u6570\uff0c\u53ef\u80fd\u5bfc\u81f4\u91ca\u653e\u540e\u91cd\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u5b58\u7834\u574f\u4ece\u800c\u6539\u53d8\u8fdb\u7a0b\u884c\u4e3a\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-05314",
  "openTime": "2025-03-18",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u5b58\u5728\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u8bbe\u7f6e\u8bbe\u5907\u91ca\u653e\u51fd\u6570\uff0c\u53ef\u80fd\u5bfc\u81f4\u91ca\u653e\u540e\u91cd\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u5185\u5b58\u7834\u574f\u4ece\u800c\u6539\u53d8\u8fdb\u7a0b\u884c\u4e3a\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Linux Linux kernel 6.14",
      "Linux Linux kernel \u003e=6.13\uff0c\u003c6.13.5",
      "Linux Linux kernel \u003e=6.7\uff0c\u003c6.12.17",
      "Linux Linux kernel \u003e=6.3\uff0c\u003c6.6.80"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-21856",
  "serverity": "\u4e2d",
  "submitTime": "2025-03-18",
  "title": "Linux kernel\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff08CNVD-2025-05314\uff09"
}

CVE-2025-21856 (GCVE-0-2025-21856)

Vulnerability from cvelistv5 – Published: 2025-03-12 09:42 – Updated: 2026-05-11 21:07

Title

s390/ism: add release function for struct device

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/ism: add release function for struct device According to device_release() in /drivers/base/core.c, a device without a release function is a broken device and must be fixed. The current code directly frees the device after calling device_add() without waiting for other kernel parts to release their references. Thus, a reference could still be held to a struct device, e.g., by sysfs, leading to potential use-after-free issues if a proper release function is not set.

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: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 19:25 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/940d15254d2216b58…
https://git.kernel.org/stable/c/0505ff2936f166405…
https://git.kernel.org/stable/c/e26e8ac27351f4570…
https://git.kernel.org/stable/c/915e34d5ad35a6a9e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 , < 940d15254d2216b585558bcf36312da50074e711 (git) Affected: 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 , < 0505ff2936f166405d81d0d454a81d9c14124344 (git) Affected: 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 , < e26e8ac27351f457091459a0a355bacd06d5bb2b (git) Affected: 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 , < 915e34d5ad35a6a9e56113f852ade4a730fb88f0 (git)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.80 , ≤ 6.6.* (semver) Unaffected: 6.12.17 , ≤ 6.12.* (semver) Unaffected: 6.13.5 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-21856",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:25:59.490091Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:26:38.355Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/net/ism_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "940d15254d2216b585558bcf36312da50074e711",
              "status": "affected",
              "version": "8c81ba20349daf9f7e58bb05a0c12f4b71813a30",
              "versionType": "git"
            },
            {
              "lessThan": "0505ff2936f166405d81d0d454a81d9c14124344",
              "status": "affected",
              "version": "8c81ba20349daf9f7e58bb05a0c12f4b71813a30",
              "versionType": "git"
            },
            {
              "lessThan": "e26e8ac27351f457091459a0a355bacd06d5bb2b",
              "status": "affected",
              "version": "8c81ba20349daf9f7e58bb05a0c12f4b71813a30",
              "versionType": "git"
            },
            {
              "lessThan": "915e34d5ad35a6a9e56113f852ade4a730fb88f0",
              "status": "affected",
              "version": "8c81ba20349daf9f7e58bb05a0c12f4b71813a30",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/net/ism_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.80",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.17",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.5",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: add release function for struct device\n\nAccording to device_release() in /drivers/base/core.c,\na device without a release function is a broken device\nand must be fixed.\n\nThe current code directly frees the device after calling device_add()\nwithout waiting for other kernel parts to release their references.\nThus, a reference could still be held to a struct device,\ne.g., by sysfs, leading to potential use-after-free\nissues if a proper release function is not set."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:07:49.863Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711"
        },
        {
          "url": "https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344"
        },
        {
          "url": "https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2b"
        },
        {
          "url": "https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0"
        }
      ],
      "title": "s390/ism: add release function for struct device",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21856",
    "datePublished": "2025-03-12T09:42:09.929Z",
    "dateReserved": "2024-12-29T08:45:45.780Z",
    "dateUpdated": "2026-05-11T21:07:49.863Z",
    "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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.