Vulnerability-Lookup

GHSA-VFXX-4XCX-MGVH

Vulnerability from github – Published: 2025-01-21 15:31 – Updated: 2025-10-15 15:30

Details

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

netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled

When the caching for a cookie is temporarily disabled (e.g. due to a DIO write on that file), future copying to the cache for that file is disabled until all fds open on that file are closed. However, if netfslib is using the deprecated PG_private_2 method (such as is currently used by ceph), and decides it wants to copy to the cache, netfs_advance_write() will just bail at the first check seeing that the cache stream is unavailable, and indicate that it dealt with all the content.

This means that we have no subrequests to provide notifications to drive the state machine or even to pin the request and the request just gets discarded, leaving the folios with PG_private_2 set.

Fix this by jumping directly to cancel the request if the cache is not available. That way, we don't remove mark3 from the folio_queue list and netfs_pgpriv2_cancel() will clean up the folios.

This was found by running the generic/013 xfstest against ceph with an active cache and the "-o fsc" option passed to ceph. That would usually hang

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

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-57941"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-21T13:15:08Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix the (non-)cancellation of copy when cache is temporarily disabled\n\nWhen the caching for a cookie is temporarily disabled (e.g. due to a DIO\nwrite on that file), future copying to the cache for that file is disabled\nuntil all fds open on that file are closed.  However, if netfslib is using\nthe deprecated PG_private_2 method (such as is currently used by ceph), and\ndecides it wants to copy to the cache, netfs_advance_write() will just bail\nat the first check seeing that the cache stream is unavailable, and\nindicate that it dealt with all the content.\n\nThis means that we have no subrequests to provide notifications to drive\nthe state machine or even to pin the request and the request just gets\ndiscarded, leaving the folios with PG_private_2 set.\n\nFix this by jumping directly to cancel the request if the cache is not\navailable.  That way, we don\u0027t remove mark3 from the folio_queue list and\nnetfs_pgpriv2_cancel() will clean up the folios.\n\nThis was found by running the generic/013 xfstest against ceph with an\nactive cache and the \"-o fsc\" option passed to ceph.  That would usually\nhang",
  "id": "GHSA-vfxx-4xcx-mgvh",
  "modified": "2025-10-15T15:30:21Z",
  "published": "2025-01-21T15:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57941"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba37bdfe59fb43e80dd79290340a21864ba4b61e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0327c824338cdccad058723a31d038ecd553409"
    }
  ],
  "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-2024-57941 (GCVE-0-2024-57941)

Vulnerability from cvelistv5 – Published: 2025-01-21 12:18 – Updated: 2026-05-11 21:01

Title

netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled

Summary

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled When the caching for a cookie is temporarily disabled (e.g. due to a DIO write on that file), future copying to the cache for that file is disabled until all fds open on that file are closed. However, if netfslib is using the deprecated PG_private_2 method (such as is currently used by ceph), and decides it wants to copy to the cache, netfs_advance_write() will just bail at the first check seeing that the cache stream is unavailable, and indicate that it dealt with all the content. This means that we have no subrequests to provide notifications to drive the state machine or even to pin the request and the request just gets discarded, leaving the folios with PG_private_2 set. Fix this by jumping directly to cancel the request if the cache is not available. That way, we don't remove mark3 from the folio_queue list and netfs_pgpriv2_cancel() will clean up the folios. This was found by running the generic/013 xfstest against ceph with an active cache and the "-o fsc" option passed to ceph. That would usually hang

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6971 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ba37bdfe59fb43e80…
https://git.kernel.org/stable/c/d0327c824338cdcca…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e , < ba37bdfe59fb43e80dd79290340a21864ba4b61e (git) Affected: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e , < d0327c824338cdccad058723a31d038ecd553409 (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.12.10 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/read_pgpriv2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ba37bdfe59fb43e80dd79290340a21864ba4b61e",
              "status": "affected",
              "version": "ee4cdf7ba857a894ad1650d6ab77669cbbfa329e",
              "versionType": "git"
            },
            {
              "lessThan": "d0327c824338cdccad058723a31d038ecd553409",
              "status": "affected",
              "version": "ee4cdf7ba857a894ad1650d6ab77669cbbfa329e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/read_pgpriv2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.10",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix the (non-)cancellation of copy when cache is temporarily disabled\n\nWhen the caching for a cookie is temporarily disabled (e.g. due to a DIO\nwrite on that file), future copying to the cache for that file is disabled\nuntil all fds open on that file are closed.  However, if netfslib is using\nthe deprecated PG_private_2 method (such as is currently used by ceph), and\ndecides it wants to copy to the cache, netfs_advance_write() will just bail\nat the first check seeing that the cache stream is unavailable, and\nindicate that it dealt with all the content.\n\nThis means that we have no subrequests to provide notifications to drive\nthe state machine or even to pin the request and the request just gets\ndiscarded, leaving the folios with PG_private_2 set.\n\nFix this by jumping directly to cancel the request if the cache is not\navailable.  That way, we don\u0027t remove mark3 from the folio_queue list and\nnetfs_pgpriv2_cancel() will clean up the folios.\n\nThis was found by running the generic/013 xfstest against ceph with an\nactive cache and the \"-o fsc\" option passed to ceph.  That would usually\nhang"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:01:05.139Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ba37bdfe59fb43e80dd79290340a21864ba4b61e"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0327c824338cdccad058723a31d038ecd553409"
        }
      ],
      "title": "netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57941",
    "datePublished": "2025-01-21T12:18:09.834Z",
    "dateReserved": "2025-01-19T11:50:08.378Z",
    "dateUpdated": "2026-05-11T21:01:05.139Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.

Action not permitted