Vulnerability-Lookup

GHSA-P9JR-XXVG-3XMG

Vulnerability from github – Published: 2025-09-16 18:31 – Updated: 2025-12-01 21:30

Details

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

fbdev/ep93xx-fb: Do not assign to struct fb_info.dev

Do not assing the Linux device to struct fb_info.dev. The call to register_framebuffer() initializes the field to the fbdev device. Drivers should not override its value.

Fixes a bug where the driver incorrectly decreases the hardware device's reference counter and leaks the fbdev device.

v2: * add Fixes tag (Dan)

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53314"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T17:15:37Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev/ep93xx-fb: Do not assign to struct fb_info.dev\n\nDo not assing the Linux device to struct fb_info.dev. The call to\nregister_framebuffer() initializes the field to the fbdev device.\nDrivers should not override its value.\n\nFixes a bug where the driver incorrectly decreases the hardware\ndevice\u0027s reference counter and leaks the fbdev device.\n\nv2:\n\t* add Fixes tag (Dan)",
  "id": "GHSA-p9jr-xxvg-3xmg",
  "modified": "2025-12-01T21:30:22Z",
  "published": "2025-09-16T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0517fc5a71333b315164736bbd32608894fbb872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c6ff2a7c593db851f23e31ace2baf557ea9d0ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/309c27162afea79b3c7f8747bb650faf6923b639"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4aade6c9100a3537788b6a9c7ac481037d19efdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f83c1b13f8154e0284448912756d0a351a1a602a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f90a0e5265b60cdd3c77990e8105f79aa2fac994"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffdf2b020db717853167391a3a8d912e13428fa6"
    }
  ],
  "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-2023-53314 (GCVE-0-2023-53314)

Vulnerability from cvelistv5 – Published: 2025-09-16 16:11 – Updated: 2026-08-05 09:13

Title

fbdev/ep93xx-fb: Do not assign to struct fb_info.dev

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev/ep93xx-fb: Do not assign to struct fb_info.dev Do not assing the Linux device to struct fb_info.dev. The call to register_framebuffer() initializes the field to the fbdev device. Drivers should not override its value. Fixes a bug where the driver incorrectly decreases the hardware device's reference counter and leaks the fbdev device. v2: * add Fixes tag (Dan)

Severity

7.8 (High)


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

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 18:25 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ffdf2b020db717853…
https://git.kernel.org/stable/c/1c6ff2a7c593db851…
https://git.kernel.org/stable/c/8ffa40ff64aa43a9a…
https://git.kernel.org/stable/c/4aade6c9100a35377…
https://git.kernel.org/stable/c/309c27162afea79b3…
https://git.kernel.org/stable/c/f83c1b13f8154e028…
https://git.kernel.org/stable/c/0517fc5a71333b315…
https://git.kernel.org/stable/c/f90a0e5265b60cdd3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < ffdf2b020db717853167391a3a8d912e13428fa6 (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < 1c6ff2a7c593db851f23e31ace2baf557ea9d0ff (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < 8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972 (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < 4aade6c9100a3537788b6a9c7ac481037d19efdf (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < 309c27162afea79b3c7f8747bb650faf6923b639 (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < f83c1b13f8154e0284448912756d0a351a1a602a (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < 0517fc5a71333b315164736bbd32608894fbb872 (git) Affected: 88017bda96a5fd568a982b01546c8fb1782dda62 , < f90a0e5265b60cdd3c77990e8105f79aa2fac994 (git)
Linux	Linux	Affected: 2.6.32 Unaffected: 0 , < 2.6.32 (semver) Unaffected: 4.14.326 , ≤ 4.14.* (semver) Unaffected: 4.19.295 , ≤ 4.19.* (semver) Unaffected: 5.4.257 , ≤ 5.4.* (semver) Unaffected: 5.10.195 , ≤ 5.10.* (semver) Unaffected: 5.15.132 , ≤ 5.15.* (semver) Unaffected: 6.1.54 , ≤ 6.1.* (semver) Unaffected: 6.5.4 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
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        "metrics": [
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              "attackComplexity": "LOW",
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              "confidentialityImpact": "NONE",
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              "userInteraction": "NONE",
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                "timestamp": "2026-01-14T18:25:34.219455Z",
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                "description": "CWE-noinfo Not enough information",
                "lang": "en",
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          "dateUpdated": "2026-01-14T18:32:57.524Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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              "lang": "en",
              "value": "AV:L - The bug is in the ep93xx-fb platform driver probe/remove path for the on-SoC Cirrus EP93xx LCD controller; it is reached only locally via boot probe, module load, or sysfs bind/unbind, with no network or hot-plug physical entry point.\nAC:L - The incorrect info-\u003edev assignment and resulting device refcount imbalance are deterministic on probe/unregister; the attacker does not depend on a race or an uncontrolled memory layout.\nPR:L - Although sysfs bind/unbind is root-owned 0200, the highest reasonable actor is a low-privileged local user on an EP93xx system where the framebuffer is already bound and /dev/fbN is usable, so PR:L is chosen over PR:H.\nUI:N - Exploitation does not require a separate victim action such as mounting a filesystem or manually opening a device beyond the attacker\u2019s own local access.\nS:U - Impact stays within the host kernel\u2019s device/refcount authority; this is not a VM escape, IOMMU bypass, or other cross-boundary break.\nC:H - Incorrectly dropping the hardware device\u2019s reference count can free the live platform device while fbdev code still uses it, yielding a use-after-free that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same device UAF is exploitable for heap reuse and arbitrary write/control-flow hijack primitives against kernel memory, not merely a benign bookkeeping error.\nA:H - A device UAF or bad put on the platform device can oops/panic the kernel on unregister or later fbdev use, and the companion fbdev device leak is secondary to that crash impact."
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        {
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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.

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.