Vulnerability-Lookup

FKIE_CVE-2024-49925

Vulnerability from fkie_nvd - Published: 2024-10-21 18:15 - Updated: 2026-08-04 11:20

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: efifb: Register sysfs groups through driver core The driver core can register and cleanup sysfs groups already. Make use of that functionality to simplify the error handling and cleanup. Also avoid a UAF race during unregistering where the sysctl attributes were usable after the info struct was freed.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2a9c40c72097b583b23aeb2a26d429ccfc81fbc1
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2d97b85eb5a86766ad0f8ea3d121e6ae144e3ed8
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/36bfefb6baaa8e46de44f4fd919ce4347337620f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4684d69b9670a83992189f6271dc0fcdec4ed0d7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/872cd2d029d2c970a8a1eea88b48dab2b3f2e93a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/95cdd538e0e5677efbdf8aade04ec098ab98f457	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/efifb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "vendor": "Linux",
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              "version": "6.6.55",
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              "version": "6.10.14",
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            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: efifb: Register sysfs groups through driver core\n\nThe driver core can register and cleanup sysfs groups already.\nMake use of that functionality to simplify the error handling and\ncleanup.\n\nAlso avoid a UAF race during unregistering where the sysctl attributes\nwere usable after the info struct was freed."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: efifb: Registrar grupos sysfs a trav\u00e9s del n\u00facleo del controlador El n\u00facleo del controlador ya puede registrar y limpiar grupos sysfs. Utilice esa funcionalidad para simplificar el manejo y la limpieza de errores. Tambi\u00e9n evite una ejecuci\u00f3n UAF durante la anulaci\u00f3n del registro donde los atributos sysctl se pod\u00edan usar despu\u00e9s de que se liberara la estructura de informaci\u00f3n."
    }
  ],
  "id": "CVE-2024-49925",
  "lastModified": "2026-08-04T11:20:58.173",
  "metrics": {
    "cvssMetricV31": [
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  "published": "2024-10-21T18:15:14.540",
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-49925 (GCVE-0-2024-49925)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-08-05 11:40

Title

fbdev: efifb: Register sysfs groups through driver core

Summary

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:39 UTC

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/2d97b85eb5a86766a…
https://git.kernel.org/stable/c/2a9c40c72097b583b…
https://git.kernel.org/stable/c/36bfefb6baaa8e46d…
https://git.kernel.org/stable/c/872cd2d029d2c970a…
https://git.kernel.org/stable/c/4684d69b9670a8399…
https://git.kernel.org/stable/c/95cdd538e0e5677ef…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 2d97b85eb5a86766ad0f8ea3d121e6ae144e3ed8 (git) Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 2a9c40c72097b583b23aeb2a26d429ccfc81fbc1 (git) Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 36bfefb6baaa8e46de44f4fd919ce4347337620f (git) Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 872cd2d029d2c970a8a1eea88b48dab2b3f2e93a (git) Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 4684d69b9670a83992189f6271dc0fcdec4ed0d7 (git) Affected: 753375a881caa01112b7cec2c796749154e0bb23 , < 95cdd538e0e5677efbdf8aade04ec098ab98f457 (git)
Linux	Linux	Affected: 4.10 Unaffected: 0 , < 4.10 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.120 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49925",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:39:49.983687Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:44.061Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:42:00.980Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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            },
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              "status": "unaffected",
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            },
            {
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              "status": "unaffected",
              "version": "6.11.3",
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            },
            {
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              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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        }
      ],
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            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached only by reading sysfs files under /sys/devices/platform/efi-framebuffer.0/ from a local process; there is no network, adjacent-network, or remote-peer path into efifb\u0027s attribute show handlers.\nAC:L - Exploitation requires the system to be in the narrow state of tearing down the efifb platform driver \u2014 a state only root can induce (driver unbind, or a DRM driver load calling aperture_remove_conflicting_devices()) \u2014 and the window between unregister_framebuffer() and sysfs_remove_groups() is a handful of instructions. The attacker controls only the reader side of the race and cannot trigger, widen, or retry the free.\nPR:L - The attributes are DEVICE_ATTR_RO (mode 0444), so any unprivileged local user, including one inside a container with /sys mounted, can read them in a tight loop with no capability at all.\nUI:N - The driver-removal event that opens the window is an automatic boot-time DRM handoff on typical systems rather than a deliberate victim action, and the attacker\u0027s own read requires no interaction from anyone else.\nS:U - The stale attribute access and the freed struct fb_info both live in the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A successful read in the window dereferences the freed struct fb_info allocation, and because the read is repeatable and the attacker can spray the slab between attempts to control what lands in the freed slot, it acts as a kernel-heap disclosure oracle rather than a single bounded leak.\nI:N - Every attribute in efifb_groups is DEVICE_ATTR_RO with no store() method, so the code path performs only loads \u2014 there is no out-of-bounds write, no write into the freed object, and no way to alter kernel memory or control flow.\nA:H - Touching the freed fb_info can fault and oops when the backing page has been returned to the allocator or on hardened builds (KASAN/KFENCE/DEBUG_PAGEALLOC), and any such fault in the fbdev teardown path takes down the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:40:28.960Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2d97b85eb5a86766ad0f8ea3d121e6ae144e3ed8"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a9c40c72097b583b23aeb2a26d429ccfc81fbc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/36bfefb6baaa8e46de44f4fd919ce4347337620f"
        },
        {
          "url": "https://git.kernel.org/stable/c/872cd2d029d2c970a8a1eea88b48dab2b3f2e93a"
        },
        {
          "url": "https://git.kernel.org/stable/c/4684d69b9670a83992189f6271dc0fcdec4ed0d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/95cdd538e0e5677efbdf8aade04ec098ab98f457"
        }
      ],
      "title": "fbdev: efifb: Register sysfs groups through driver core",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49925",
    "datePublished": "2024-10-21T18:01:49.732Z",
    "dateReserved": "2024-10-21T12:17:06.036Z",
    "dateUpdated": "2026-08-05T11:40:28.960Z",
    "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.

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.