GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

GHSA-G29R-CH4V-Q6CX

Vulnerability from github – Published: 2025-01-11 15:30 – Updated: 2025-11-03 21:32
VLAI
Details

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

dma-debug: fix a possible deadlock on radix_lock

radix_lock() shouldn't be held while holding dma_hash_entry[idx].lock otherwise, there's a possible deadlock scenario when dma debug API is called holding rq_lock():

CPU0 CPU1 CPU2 dma_free_attrs() check_unmap() add_dma_entry() __schedule() //out (A) rq_lock() get_hash_bucket() (A) dma_entry_hash check_sync() (A) radix_lock() (W) dma_entry_hash dma_entry_free() (W) radix_lock() // CPU2's one (W) rq_lock()

CPU1 situation can happen when it extending radix tree and it tries to wake up kswapd via wake_all_kswapd().

CPU2 situation can happen while perf_event_task_sched_out() (i.e. dma sync operation is called while deleting perf_event using etm and etr tmc which are Arm Coresight hwtracing driver backends).

To remove this possible situation, call dma_entry_free() after put_hash_bucket() in check_unmap().

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-47143"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-11T13:15:22Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma-debug: fix a possible deadlock on radix_lock\n\nradix_lock() shouldn\u0027t be held while holding dma_hash_entry[idx].lock\notherwise, there\u0027s a possible deadlock scenario when\ndma debug API is called holding rq_lock():\n\nCPU0                   CPU1                       CPU2\ndma_free_attrs()\ncheck_unmap()          add_dma_entry()            __schedule() //out\n                                                  (A) rq_lock()\nget_hash_bucket()\n(A) dma_entry_hash\n                                                  check_sync()\n                       (A) radix_lock()           (W) dma_entry_hash\ndma_entry_free()\n(W) radix_lock()\n                       // CPU2\u0027s one\n                       (W) rq_lock()\n\nCPU1 situation can happen when it extending radix tree and\nit tries to wake up kswapd via wake_all_kswapd().\n\nCPU2 situation can happen while perf_event_task_sched_out()\n(i.e. dma sync operation is called while deleting perf_event using\n etm and etr tmc which are Arm Coresight hwtracing driver backends).\n\nTo remove this possible situation, call dma_entry_free() after\nput_hash_bucket() in check_unmap().",
  "id": "GHSA-g29r-ch4v-q6cx",
  "modified": "2025-11-03T21:32:07Z",
  "published": "2025-01-11T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47143"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ccce34a5c3f5c9541108a451657ade621524b32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7543c3e3b9b88212fcd0aaf5cab5588797bdc7de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c1b4fea8d62285f5e1a8194889b39661608bd8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c212d91070beca0d03fef7bf988baf4ff4b3eee4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efe1b9bbf356357fdff0399af361133d6e3ba18e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2b95248a16c5186d1c658fc0aeb2f3bd95e5259"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "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"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.