Vulnerability-Lookup

FKIE_CVE-2023-53458

Vulnerability from fkie_nvd - Published: 2025-10-01 12:15 - Updated: 2026-01-16 20:58

Severity ?

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: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish() When the driver calls cx23885_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer risc->cpu. Later when we free the buffer or access the buffer, null ptr deref is triggered. This bug is similar to the following one: https://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71. We believe the bug can be also dynamically triggered from user side. Similarly, we fix this by checking the return value of cx23885_risc_buffer() and the value of risc->cpu before buffer free.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/47e8b73bc35d7c54642f78e498697692f6358996	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5b8e5e28e85a546dfccc3895befe0e823fdd7c89	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6738841f6fcf23e9fc30e2449f32fc84ee19c6f1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f0a06203f2fe63f04311467200c99c4ee1926578	Patch

Impacted products

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

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2C98C77B-9690-4839-9D3F-20663F658945",
              "versionEndExcluding": "5.15.113",
              "versionStartIncluding": "3.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E9430E62-03EA-42E6-9E5E-BD1D5124D107",
              "versionEndExcluding": "6.1.30",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "26C54BF0-3EED-46D4-92A7-5F07F658B49B",
              "versionEndExcluding": "6.3.4",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()\n\nWhen the driver calls cx23885_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nrisc-\u003ecpu. Later when we free the buffer or access the buffer, null ptr\nderef is triggered.\n\nThis bug is similar to the following one:\nhttps://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.\n\nWe believe the bug can be also dynamically triggered from user side.\nSimilarly, we fix this by checking the return value of cx23885_risc_buffer()\nand the value of risc-\u003ecpu before buffer free."
    }
  ],
  "id": "CVE-2023-53458",
  "lastModified": "2026-01-16T20:58:04.740",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-10-01T12:15:47.300",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/47e8b73bc35d7c54642f78e498697692f6358996"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5b8e5e28e85a546dfccc3895befe0e823fdd7c89"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6738841f6fcf23e9fc30e2449f32fc84ee19c6f1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f0a06203f2fe63f04311467200c99c4ee1926578"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2023-53458 (GCVE-0-2023-53458)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-01-05 10:20

Title

media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f0a06203f2fe63f04…
	https://git.kernel.org/stable/c/6738841f6fcf23e9f…
	https://git.kernel.org/stable/c/5b8e5e28e85a546df…
	https://git.kernel.org/stable/c/47e8b73bc35d7c546…

Impacted products

Vendor

Product

Version

Linux

Affected: 4d63a25c4523b5d18e5307897d56aff785f43bf5 , < f0a06203f2fe63f04311467200c99c4ee1926578 (git)
Affected: 4d63a25c4523b5d18e5307897d56aff785f43bf5 , < 6738841f6fcf23e9fc30e2449f32fc84ee19c6f1 (git)
Affected: 4d63a25c4523b5d18e5307897d56aff785f43bf5 , < 5b8e5e28e85a546dfccc3895befe0e823fdd7c89 (git)
Affected: 4d63a25c4523b5d18e5307897d56aff785f43bf5 , < 47e8b73bc35d7c54642f78e498697692f6358996 (git)

Linux

Affected: 3.18
Unaffected: 0 , < 3.18 (semver)
Unaffected: 5.15.113 , ≤ 5.15.* (semver)
Unaffected: 6.1.30 , ≤ 6.1.* (semver)
Unaffected: 6.3.4 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/cx23885/cx23885-core.c",
            "drivers/media/pci/cx23885/cx23885-video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f0a06203f2fe63f04311467200c99c4ee1926578",
              "status": "affected",
              "version": "4d63a25c4523b5d18e5307897d56aff785f43bf5",
              "versionType": "git"
            },
            {
              "lessThan": "6738841f6fcf23e9fc30e2449f32fc84ee19c6f1",
              "status": "affected",
              "version": "4d63a25c4523b5d18e5307897d56aff785f43bf5",
              "versionType": "git"
            },
            {
              "lessThan": "5b8e5e28e85a546dfccc3895befe0e823fdd7c89",
              "status": "affected",
              "version": "4d63a25c4523b5d18e5307897d56aff785f43bf5",
              "versionType": "git"
            },
            {
              "lessThan": "47e8b73bc35d7c54642f78e498697692f6358996",
              "status": "affected",
              "version": "4d63a25c4523b5d18e5307897d56aff785f43bf5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/cx23885/cx23885-core.c",
            "drivers/media/pci/cx23885/cx23885-video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.18"
            },
            {
              "lessThan": "3.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.113",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.30",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.4",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()\n\nWhen the driver calls cx23885_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nrisc-\u003ecpu. Later when we free the buffer or access the buffer, null ptr\nderef is triggered.\n\nThis bug is similar to the following one:\nhttps://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.\n\nWe believe the bug can be also dynamically triggered from user side.\nSimilarly, we fix this by checking the return value of cx23885_risc_buffer()\nand the value of risc-\u003ecpu before buffer free."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:20:51.971Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f0a06203f2fe63f04311467200c99c4ee1926578"
        },
        {
          "url": "https://git.kernel.org/stable/c/6738841f6fcf23e9fc30e2449f32fc84ee19c6f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b8e5e28e85a546dfccc3895befe0e823fdd7c89"
        },
        {
          "url": "https://git.kernel.org/stable/c/47e8b73bc35d7c54642f78e498697692f6358996"
        }
      ],
      "title": "media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53458",
    "datePublished": "2025-10-01T11:42:29.665Z",
    "dateReserved": "2025-10-01T11:39:39.399Z",
    "dateUpdated": "2026-01-05T10:20:51.971Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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

FKIE_CVE-2023-53458

CVE-2023-53458 (GCVE-0-2023-53458)

Tags

Sightings

Nomenclature