Vulnerability-Lookup

FKIE_CVE-2024-27043

Vulnerability from fkie_nvd - Published: 2024-05-01 13:15 - Updated: 2026-08-04 11:17

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637b	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html	Patch

Impacted products

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

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/dvb-core/dvbdev.c"
          ],
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          "vendor": "Linux",
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            {
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          ]
        },
        {
          "defaultStatus": "affected",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.21"
            },
            {
              "lessThan": "2.6.21",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.311",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.214",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: edia: dvbdev: fix a use-after-free\n\nIn dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed\nin several error-handling paths. However, *pdvbdev is not set to NULL\nafter dvbdev\u0027s deallocation, causing use-after-frees in many places,\nfor example, in the following call chain:\n\nbudget_register\n  |-\u003e dvb_dmxdev_init\n        |-\u003e dvb_register_device\n  |-\u003e dvb_dmxdev_release\n        |-\u003e dvb_unregister_device\n              |-\u003e dvb_remove_device\n                    |-\u003e dvb_device_put\n                          |-\u003e kref_put\n\nWhen calling dvb_unregister_device, dmxdev-\u003edvbdev (i.e. *pdvbdev in\ndvb_register_device) could point to memory that had been freed in\ndvb_register_device. Thereafter, this pointer is transferred to\nkref_put and triggering a use-after-free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: medios: edia: dvbdev: corregir un use-after-free En dvb_register_device, *pdvbdev se establece igual a dvbdev, que se libera en varias rutas de manejo de errores. Sin embargo, *pdvbdev no se establece en NULL despu\u00e9s de la desasignaci\u00f3n de dvbdev, lo que provoca use-after-free en muchos lugares, por ejemplo, en la siguiente cadena de llamadas: Budget_register |-\u0026gt; dvb_dmxdev_init |-\u0026gt; dvb_register_device |-\u0026gt; dvb_dmxdev_release |-\u0026gt; dvb_unregister_device | -\u0026gt; dvb_remove_device |-\u0026gt; dvb_device_put |-\u0026gt; kref_put Al llamar a dvb_unregister_device, dmxdev-\u0026gt;dvbdev (es decir, *pdvbdev en dvb_register_device) podr\u00eda apuntar a la memoria que se hab\u00eda liberado en dvb_register_device. A partir de entonces, este puntero se transfiere a kref_put y se activa un use-after-free."
    }
  ],
  "id": "CVE-2024-27043",
  "lastModified": "2026-08-04T11:17:37.013",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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      {
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          "attackComplexity": "LOW",
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          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-27043",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-08-15T19:22:34.576999Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-01T13:15:49.740",
  "references": [
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      "tags": [
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    {
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      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-27043 (GCVE-0-2024-27043)

Vulnerability from cvelistv5 – Published: 2024-05-01 12:54 – Updated: 2026-08-05 11:29

Title

media: edia: dvbdev: fix a use-after-free

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-15 19:22 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6667 records in the last 180 days details

References

11 references

URL	Tags
https://git.kernel.org/stable/c/d0f5c28333822f9ba…
https://git.kernel.org/stable/c/f20c3270f3ed5aa69…
https://git.kernel.org/stable/c/096237039d00c839f…
https://git.kernel.org/stable/c/0d3fe80b6d175c220…
https://git.kernel.org/stable/c/437a111f79a2f5b2a…
https://git.kernel.org/stable/c/779e8db7efb22316c…
https://git.kernel.org/stable/c/35674111a043b0482…
https://git.kernel.org/stable/c/b7586e902128e4fb7…
https://git.kernel.org/stable/c/8c64f4cdf4e6cc568…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://lists.debian.org/debian-lts-announce/2024…	x_transferred

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < d0f5c28333822f9baa5280d813124920720fd856 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < f20c3270f3ed5aa6919a87e4de9bf6c05fb57086 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 096237039d00c839f3e3a5fe6d001bf0db45b644 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 0d3fe80b6d175c220b3e252efc6c6777e700e98e (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 437a111f79a2f5b2a5f21e27fdec6f40c8768712 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 779e8db7efb22316c8581d6c229636d2f5694a62 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 35674111a043b0482a9bc69da8850a83f465b07d (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < b7586e902128e4fb7bfbb661cb52e4215a65637b (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 8c64f4cdf4e6cc5682c52523713af8c39c94e6d5 (git)
Linux	Linux	Affected: 2.6.21 Unaffected: 0 , < 2.6.21 (semver) Unaffected: 4.19.311 , ≤ 4.19.* (semver) Unaffected: 5.4.273 , ≤ 5.4.* (semver) Unaffected: 5.10.214 , ≤ 5.10.* (semver) Unaffected: 5.15.153 , ≤ 5.15.* (semver) Unaffected: 6.1.83 , ≤ 6.1.* (semver) Unaffected: 6.6.23 , ≤ 6.6.* (semver) Unaffected: 6.7.11 , ≤ 6.7.* (semver) Unaffected: 6.8.2 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

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              "version": "0",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: edia: dvbdev: fix a use-after-free\n\nIn dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed\nin several error-handling paths. However, *pdvbdev is not set to NULL\nafter dvbdev\u0027s deallocation, causing use-after-frees in many places,\nfor example, in the following call chain:\n\nbudget_register\n  |-\u003e dvb_dmxdev_init\n        |-\u003e dvb_register_device\n  |-\u003e dvb_dmxdev_release\n        |-\u003e dvb_unregister_device\n              |-\u003e dvb_remove_device\n                    |-\u003e dvb_device_put\n                          |-\u003e kref_put\n\nWhen calling dvb_unregister_device, dmxdev-\u003edvbdev (i.e. *pdvbdev in\ndvb_register_device) could point to memory that had been freed in\ndvb_register_device. Thereafter, this pointer is transferred to\nkref_put and triggering a use-after-free."
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              "value": "AV:L - The vulnerable code is in dvb-core adapter registration, reached through local device probe/re-probe of a DVB adapter, with the error condition (kmalloc failure or DVB minor exhaustion) driven by a local unprivileged process inducing memory/resource pressure. No network or adjacent-network path exists, but the trigger does not require physical access on systems where a local user can force a re-probe of an already-present tuner.\nAC:L - There is no race the attacker must lose; the attacker controls both sides \u2014 memory pressure to force the GFP_KERNEL failure paths, and registration attempts to hit them, plus the deterministic MAX_DVB_MINORS exhaustion path under CONFIG_DVB_DYNAMIC_MINORS. Per the UAF guidance, a use-after-free with attacker-influenceable triggering conditions is Low.\nPR:L - A basic unprivileged local account suffices to generate the memory pressure that forces the error paths and to drive repeated registration attempts; no CAP_SYS_ADMIN or root in the init namespace is required to reach dvb-core\u0027s registration failure handling.\nUI:N - No victim action is needed \u2014 the attacker drives both the allocation failure and the device registration attempt themselves, and the stale pointer is consumed automatically by the driver\u0027s own error-unwind path.\nS:U - The corruption is confined to kernel heap and kernel static data within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The dangling struct dvb_device is dereferenced after free (dmxdev-\u003edvbdev-\u003eusers, -\u003ewait_queue, -\u003eminor), so heap-spray reallocation of that slab object gives the attacker control over the freed contents and, via the list_del unlink and wait-queue callback primitives, a route to arbitrary kernel memory disclosure.\nI:H - The use-after-free yields multiple write primitives: list_del() on freed memory is a classic write-what-where unlink, dvb_minors[dvbdev-\u003eminor] = NULL writes at an attacker-chosen offset from a static array, and kref_put() double-frees the object \u2014 collectively sufficient for control-flow hijack and privilege escalation.\nA:H - Even without full exploitation, dereferencing and kfree()ing already-freed memory reliably produces slab corruption, a double free, and out-of-bounds writes, resulting in kernel oops or panic."
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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.

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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.
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