Vulnerability-Lookup

CNVD-2024-39520

Vulnerability from cnvd - Published: 2024-09-27

Title

Linux kernel存在未明漏洞（CNVD-2024-39520）

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存在安全漏洞，该漏洞源于xen:privcmd组件存在由于使用互斥锁可能导致的死锁问题。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Linux kernel存在未明漏洞（CNVD-2024-39520）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存在安全漏洞，该漏洞源于xen:privcmd组件存在由于使用互斥锁可能导致的死锁问题。目前没有详细的漏洞细节提供。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

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3

Reference

https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3 https://git.kernel.org/stable/c/49f2a5da6785b2dbde93e291cae037662440346e https://git.kernel.org/stable/c/c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c https://access.redhat.com/security/cve/cve-2024-44957 https://cxsecurity.com/cveshow/CVE-2024-44957/

Impacted products

Name
['Linux Linux Kernel <6.6.46', 'Linux Linux kernel >=6.7，<6.10.5']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2024-44957",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2024-44957"
    }
  },
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8exen:privcmd\u7ec4\u4ef6\u5b58\u5728\u7531\u4e8e\u4f7f\u7528\u4e92\u65a5\u9501\u53ef\u80fd\u5bfc\u81f4\u7684\u6b7b\u9501\u95ee\u9898\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2024-39520",
  "openTime": "2024-09-27",
  "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\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8exen:privcmd\u7ec4\u4ef6\u5b58\u5728\u7531\u4e8e\u4f7f\u7528\u4e92\u65a5\u9501\u53ef\u80fd\u5bfc\u81f4\u7684\u6b7b\u9501\u95ee\u9898\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2024-39520\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Linux Linux Kernel \u003c6.6.46",
      "Linux Linux kernel \u003e=6.7\uff0c\u003c6.10.5"
    ]
  },
  "referenceLink": "https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3\r\nhttps://git.kernel.org/stable/c/49f2a5da6785b2dbde93e291cae037662440346e\r\nhttps://git.kernel.org/stable/c/c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c\r\nhttps://access.redhat.com/security/cve/cve-2024-44957\r\nhttps://cxsecurity.com/cveshow/CVE-2024-44957/",
  "serverity": "\u4e2d",
  "submitTime": "2024-09-10",
  "title": "Linux kernel\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2024-39520\uff09"
}

CVE-2024-44957 (GCVE-0-2024-44957)

Vulnerability from cvelistv5 – Published: 2024-09-04 18:35 – Updated: 2026-05-11 20:32

Title

xen: privcmd: Switch from mutex to spinlock for irqfds

Summary

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Switch from mutex to spinlock for irqfds irqfd_wakeup() gets EPOLLHUP, when it is called by eventfd_release() by way of wake_up_poll(&ctx->wqh, EPOLLHUP), which gets called under spin_lock_irqsave(). We can't use a mutex here as it will lead to a deadlock. Fix it by switching over to a spin lock.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:40 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/c2775ae4d9227729f…
https://git.kernel.org/stable/c/49f2a5da6785b2dbd…
https://git.kernel.org/stable/c/1c682593096a487fd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6 , < c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c (git) Affected: f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6 , < 49f2a5da6785b2dbde93e291cae037662440346e (git) Affected: f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6 , < 1c682593096a487fd9aebc079a307ff7a6d054a3 (git)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.46 , ≤ 6.6.* (semver) Unaffected: 6.10.5 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-44957",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:40:00.406164Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:36.345Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/xen/privcmd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c",
              "status": "affected",
              "version": "f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "49f2a5da6785b2dbde93e291cae037662440346e",
              "status": "affected",
              "version": "f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "1c682593096a487fd9aebc079a307ff7a6d054a3",
              "status": "affected",
              "version": "f8941e6c4c712948663ec5d7bbb546f1a0f4e3f6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/xen/privcmd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.46",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.5",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen: privcmd: Switch from mutex to spinlock for irqfds\n\nirqfd_wakeup() gets EPOLLHUP, when it is called by\neventfd_release() by way of wake_up_poll(\u0026ctx-\u003ewqh, EPOLLHUP), which\ngets called under spin_lock_irqsave(). We can\u0027t use a mutex here as it\nwill lead to a deadlock.\n\nFix it by switching over to a spin lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:32:42.411Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c"
        },
        {
          "url": "https://git.kernel.org/stable/c/49f2a5da6785b2dbde93e291cae037662440346e"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3"
        }
      ],
      "title": "xen: privcmd: Switch from mutex to spinlock for irqfds",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-44957",
    "datePublished": "2024-09-04T18:35:55.939Z",
    "dateReserved": "2024-08-21T05:34:56.666Z",
    "dateUpdated": "2026-05-11T20:32:42.411Z",
    "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.