Vulnerability-Lookup

GHSA-W9FV-GM94-H938

Vulnerability from github – Published: 2024-05-21 18:31 – Updated: 2025-09-23 21:30

Details

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

fbdev: Fix invalid page access after closing deferred I/O devices

When a fbdev with deferred I/O is once opened and closed, the dirty pages still remain queued in the pageref list, and eventually later those may be processed in the delayed work. This may lead to a corruption of pages, hitting an Oops.

This patch makes sure to cancel the delayed work and clean up the pageref list at closing the device for addressing the bug. A part of the cleanup code is factored out as a new helper function that is called from the common fb_release().

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52731"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T16:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Fix invalid page access after closing deferred I/O devices\n\nWhen a fbdev with deferred I/O is once opened and closed, the dirty\npages still remain queued in the pageref list, and eventually later\nthose may be processed in the delayed work.  This may lead to a\ncorruption of pages, hitting an Oops.\n\nThis patch makes sure to cancel the delayed work and clean up the\npageref list at closing the device for addressing the bug.  A part of\nthe cleanup code is factored out as a new helper function that is\ncalled from the common fb_release().",
  "id": "GHSA-w9fv-gm94-h938",
  "modified": "2025-09-23T21:30:53Z",
  "published": "2024-05-21T18:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52731"
    },
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  "severity": [
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      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
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}

CVE-2023-52731 (GCVE-0-2023-52731)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:22 – Updated: 2026-05-11 19:32

Title

fbdev: Fix invalid page access after closing deferred I/O devices

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: Fix invalid page access after closing deferred I/O devices When a fbdev with deferred I/O is once opened and closed, the dirty pages still remain queued in the pageref list, and eventually later those may be processed in the delayed work. This may lead to a corruption of pages, hitting an Oops. This patch makes sure to cancel the delayed work and clean up the pageref list at closing the device for addressing the bug. A part of the cleanup code is factored out as a new helper function that is called from the common fb_release().

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/87b9802ca824fcee7…
https://git.kernel.org/stable/c/f1d91f0e9d5a240a8…
https://git.kernel.org/stable/c/3efc61d95259956db…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 186b89659c4c67cccead52961eab0ca3b23951dc , < 87b9802ca824fcee7915e717e9a60471af62e8e9 (git) Affected: 56c134f7f1b58be08bdb0ca8372474a4a5165f31 , < f1d91f0e9d5a240a809698d7d9c5a538e7dcc149 (git) Affected: 56c134f7f1b58be08bdb0ca8372474a4a5165f31 , < 3efc61d95259956db25347e2a9562c3e54546e20 (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (semver) Unaffected: 6.1.13 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-W9FV-GM94-H938

CVE-2023-52731 (GCVE-0-2023-52731)

Tags

Sightings

Nomenclature