github - ghsa-7rcg-54w2-5p8p

ghsa-7rcg-54w2-5p8p

Vulnerability from github

Published

2025-09-15 15:31

Modified

2025-09-15 15:31

Details

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

media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish

When the driver calls tw68_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer buf->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 tw68_risc_buffer() and the value of buf->cpu before buffer free.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53244"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish\n\nWhen the driver calls tw68_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nbuf-\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 tw68_risc_buffer()\nand the value of buf-\u003ecpu before buffer free.",
  "id": "GHSA-7rcg-54w2-5p8p",
  "modified": "2025-09-15T15:31:30Z",
  "published": "2025-09-15T15:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53244"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1634b7adcc5bef645b3666fdd564e5952a9e24e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3715c5e9a8f96b6ed0dcbea06da443efccac1ecc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c67f49a6643d973e83968ea35806c7b5ae68b56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dcf632bca424e6ff8c8eb89c96694e7f05cd29b6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2023-53244 (GCVE-0-2023-53244)

Vulnerability from cvelistv5

Published

2025-09-15 14:46

Modified

2025-09-15 14:46

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish When the driver calls tw68_risc_buffer() to prepare the buffer, the function call dma_alloc_coherent may fail, resulting in a empty buffer buf->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 tw68_risc_buffer() and the value of buf->cpu before buffer free.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/dcf632bca424e6ff8c8eb89c96694e7f05cd29b6
	https://git.kernel.org/stable/c/3c67f49a6643d973e83968ea35806c7b5ae68b56
	https://git.kernel.org/stable/c/3715c5e9a8f96b6ed0dcbea06da443efccac1ecc
	https://git.kernel.org/stable/c/1634b7adcc5bef645b3666fdd564e5952a9e24e0

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/tw68/tw68-video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "dcf632bca424e6ff8c8eb89c96694e7f05cd29b6",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3c67f49a6643d973e83968ea35806c7b5ae68b56",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3715c5e9a8f96b6ed0dcbea06da443efccac1ecc",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1634b7adcc5bef645b3666fdd564e5952a9e24e0",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/tw68/tw68-video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "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",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish\n\nWhen the driver calls tw68_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nbuf-\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 tw68_risc_buffer()\nand the value of buf-\u003ecpu before buffer free."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:46:12.951Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/dcf632bca424e6ff8c8eb89c96694e7f05cd29b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c67f49a6643d973e83968ea35806c7b5ae68b56"
        },
        {
          "url": "https://git.kernel.org/stable/c/3715c5e9a8f96b6ed0dcbea06da443efccac1ecc"
        },
        {
          "url": "https://git.kernel.org/stable/c/1634b7adcc5bef645b3666fdd564e5952a9e24e0"
        }
      ],
      "title": "media: pci: tw68: Fix null-ptr-deref bug in buf prepare and finish",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53244",
    "datePublished": "2025-09-15T14:46:12.951Z",
    "dateReserved": "2025-09-15T14:19:21.848Z",
    "dateUpdated": "2025-09-15T14:46:12.951Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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