Vulnerability-Lookup

CNVD-2025-04160

Vulnerability from cnvd - Published: 2025-03-03

Title

Linux kernel tmpfs模块竞争条件漏洞

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，该漏洞源于处理dquot rbtree时存在争用问题。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Linux kernel tmpfs模块竞争条件漏洞的补丁

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存在安全漏洞，该漏洞源于处理dquot rbtree时存在争用问题。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

厂商已提供漏洞修复方案，请关注厂商主页更新： https://www.kernel.org

Reference

https://git.kernel.org/stable/c/c7077f43f30d817d10a9f8245e51576ac114b2f0 https://git.kernel.org/stable/c/617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb https://git.kernel.org/stable/c/f82f184874d2761ebaa60dccf577921a0dbb3810 https://git.kernel.org/stable/c/0a69b6b3a026543bc215ccc866d0aea5579e6ce2

Impacted products

Name
['Linux Linux kernel 6.7.，<6.7.12', 'Linux Linux kernel 6.8.，<6.8.3']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2024-27058",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2024-27058"
    }
  },
  "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\u4e8e\u5904\u7406dquot rbtree\u65f6\u5b58\u5728\u4e89\u7528\u95ee\u9898\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.kernel.org",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-04160",
  "openTime": "2025-03-03",
  "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\u4e8e\u5904\u7406dquot rbtree\u65f6\u5b58\u5728\u4e89\u7528\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 tmpfs\u6a21\u5757\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Linux Linux kernel 6.7.*\uff0c\u003c6.7.12",
      "Linux Linux kernel 6.8.*\uff0c\u003c6.8.3"
    ]
  },
  "referenceLink": "https://git.kernel.org/stable/c/c7077f43f30d817d10a9f8245e51576ac114b2f0\r\nhttps://git.kernel.org/stable/c/617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb\r\nhttps://git.kernel.org/stable/c/f82f184874d2761ebaa60dccf577921a0dbb3810\r\nhttps://git.kernel.org/stable/c/0a69b6b3a026543bc215ccc866d0aea5579e6ce2",
  "serverity": "\u4e2d",
  "submitTime": "2025-02-26",
  "title": "Linux kernel tmpfs\u6a21\u5757\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e"
}

CVE-2024-27058 (GCVE-0-2024-27058)

Vulnerability from cvelistv5 – Published: 2024-05-01 13:00 – Updated: 2026-08-05 11:29

Title

tmpfs: fix race on handling dquot rbtree

Summary

In the Linux kernel, the following vulnerability has been resolved: tmpfs: fix race on handling dquot rbtree A syzkaller reproducer found a race while attempting to remove dquot information from the rb tree. Fetching the rb_tree root node must also be protected by the dqopt->dqio_sem, otherwise, giving the right timing, shmem_release_dquot() will trigger a warning because it couldn't find a node in the tree, when the real reason was the root node changing before the search starts: Thread 1 Thread 2 - shmem_release_dquot() - shmem_{acquire,release}_dquot() - fetch ROOT - Fetch ROOT - acquire dqio_sem - wait dqio_sem - do something, triger a tree rebalance - release dqio_sem - acquire dqio_sem - start searching for the node, but from the wrong location, missing the node, and triggering a warning.

Severity

7.8 (High)


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

4.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-17 15:12 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6667 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/c7077f43f30d817d1…
https://git.kernel.org/stable/c/617d55b90e73c7b4a…
https://git.kernel.org/stable/c/f82f184874d2761eb…
https://git.kernel.org/stable/c/0a69b6b3a026543bc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: eafc474e202978ac735c551d5ee1eb8c02e2be54 , < c7077f43f30d817d10a9f8245e51576ac114b2f0 (git) Affected: eafc474e202978ac735c551d5ee1eb8c02e2be54 , < 617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb (git) Affected: eafc474e202978ac735c551d5ee1eb8c02e2be54 , < f82f184874d2761ebaa60dccf577921a0dbb3810 (git) Affected: eafc474e202978ac735c551d5ee1eb8c02e2be54 , < 0a69b6b3a026543bc215ccc866d0aea5579e6ce2 (git)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8.3 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 4.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.1"
            }
          },
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            "other": {
              "content": {
                "id": "CVE-2024-27058",
                "options": [
                  {
                    "Exploitation": "none"
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-17T15:12:32.083830Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
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                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
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            ]
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        "providerMetadata": {
          "dateUpdated": "2024-11-01T17:11:16.996Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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        "references": [
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
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          "versions": [
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          "versions": [
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntmpfs: fix race on handling dquot rbtree\n\nA syzkaller reproducer found a race while attempting to remove dquot\ninformation from the rb tree.\n\nFetching the rb_tree root node must also be protected by the\ndqopt-\u003edqio_sem, otherwise, giving the right timing, shmem_release_dquot()\nwill trigger a warning because it couldn\u0027t find a node in the tree, when\nthe real reason was the root node changing before the search starts:\n\nThread 1\t\t\t\tThread 2\n- shmem_release_dquot()\t\t\t- shmem_{acquire,release}_dquot()\n\n- fetch ROOT\t\t\t\t- Fetch ROOT\n\n\t\t\t\t\t- acquire dqio_sem\n- wait dqio_sem\n\n\t\t\t\t\t- do something, triger a tree rebalance\n\t\t\t\t\t- release dqio_sem\n\n- acquire dqio_sem\n- start searching for the node, but\n  from the wrong location, missing\n  the node, and triggering a warning."
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              "value": "AV:L - The vulnerable code is reached through local filesystem operations (create/chgrp/unlink) on a quota-enabled tmpfs and through the quotactl syscall; there is no network-facing path.\nAC:L - The attacker controls both sides of the race \u2014 spawning concurrent threads that force rb-tree insertions/rotations via dquot_initialize()/dquot_transfer() while the quota release worker walks the tree from its stale root \u2014 and the window spans two blocking lock acquisitions (dq_lock, then dqio_sem) that the attacker can widen by contending dqio_sem; a syzkaller reproducer exists.\nPR:L - Only an unprivileged local user with write access to the quota-enabled tmpfs is needed, since shmem_acquire_dquot()/shmem_release_dquot() run on ordinary inode creation and chown/chgrp with no capability check; enabling quota at mount time is an administrator-side deployment precondition, not an attacker privilege.\nUI:N - The attacker triggers the race entirely from their own processes doing normal file operations; no action by any other user is required.\nS:U - The corruption and crash are confined to the kernel\u0027s own memory and the tmpfs quota subsystem, with no crossing into another security authority such as a hypervisor or IOMMU boundary.\nC:H - Because the root is fetched outside dqio_sem, the traversal can continue into a quota_id object that a concurrent shmem_release_dquot() already rb_erase()d and kfree()d, reading entry-\u003eid and following rb_left/rb_right out of freed kmalloc-64 memory that can be groomed with attacker data, and via Q_GETNEXTQUOTA that freed content is returned to userspace as a qid.\nI:H - After following stale/freed tree pointers the found: path stores four attacker-influenced 64-bit limit values into the located \"entry\", then rb_erase()s and kfree()s it, giving writes and a free against a reallocated heap object \u2014 heap corruption exploitable beyond a simple crash.\nA:H - The race reliably triggers WARN_ONCE() in shmem_release_dquot() (a panic under panic_on_warn) and returns -ENOENT with DQ_ACTIVE_B still set, so quota_release_workfn() restarts on the same dquot and can spin, stalling all quota releases and blocking flush_delayed_work()/quotaoff/umount; the unlocked info-\u003edqi_priv deref in shmem_get_next_id() also NULL-derefs before its sb_has_quota_active() check."
            }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2024-05-01T13:00:06.852Z",
    "dateReserved": "2024-02-19T14:20:24.214Z",
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}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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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