FKIE_CVE-2023-54314

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 06:47
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: media: af9005: Fix null-ptr-deref in af9005_i2c_xfer In af9005_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach af9005_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/033b0c0780adee32dde218179e9bc51d2525108f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63d962ac7a52c0ff4cd09af2e284dce5e5955dfe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98c12abb275b75a98ff62de9466d21e4daa98536
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abb6fd93e05e80668d2317fe1110bc99b05034c3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7e5ac737db25d7387fe517cb5207706782b6cf8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e595ff350b2fd600823ee8491df7df693ae4b7c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4ee84f27625ce1fdf41e8483fa0561a1b837d10
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/dvb-usb/af9005.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "98c12abb275b75a98ff62de9466d21e4daa98536",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "63d962ac7a52c0ff4cd09af2e284dce5e5955dfe",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "c7e5ac737db25d7387fe517cb5207706782b6cf8",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "033b0c0780adee32dde218179e9bc51d2525108f",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "abb6fd93e05e80668d2317fe1110bc99b05034c3",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "e595ff350b2fd600823ee8491df7df693ae4b7c5",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            },
            {
              "lessThan": "f4ee84f27625ce1fdf41e8483fa0561a1b837d10",
              "status": "affected",
              "version": "af4e067e1dcf926d9523dff11e46c45fd9fa9da2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/dvb-usb/af9005.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "lessThan": "2.6.23",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.326",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.295",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.133",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: af9005: Fix null-ptr-deref in af9005_i2c_xfer\n\nIn af9005_i2c_xfer, msg is controlled by user. When msg[i].buf\nis null and msg[i].len is zero, former checks on msg[i].buf would be\npassed. Malicious data finally reach af9005_i2c_xfer. If accessing\nmsg[i].buf[0] without sanity check, null ptr deref would happen.\nWe add check on msg[i].len to prevent crash.\n\nSimilar commit:\ncommit 0ed554fd769a\n(\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmedia: af9005: Correcci\u00f3n de desreferencia de puntero nulo en af9005_i2c_xfer\n\nEn af9005_i2c_xfer, msg es controlado por el usuario. Cuando msg[i].buf es nulo y msg[i].len es cero, las comprobaciones anteriores en msg[i].buf se pasar\u00edan. Datos maliciosos finalmente alcanzan af9005_i2c_xfer. Si se accede a msg[i].buf[0] sin una comprobaci\u00f3n de cordura, ocurrir\u00eda una desreferencia de puntero nulo. A\u00f1adimos una comprobaci\u00f3n en msg[i].len para prevenir un fallo.\n\nCommit similar:\ncommit 0ed554fd769a\n(\u0027media: dvb-usb: az6027: correcci\u00f3n de desreferencia de puntero nulo en az6027_i2c_xfer()\u0027)"
    }
  ],
  "id": "CVE-2023-54314",
  "lastModified": "2026-06-17T06:47:12.603",
  "metrics": {},
  "published": "2025-12-30T13:16:20.650",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/033b0c0780adee32dde218179e9bc51d2525108f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/63d962ac7a52c0ff4cd09af2e284dce5e5955dfe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/98c12abb275b75a98ff62de9466d21e4daa98536"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/abb6fd93e05e80668d2317fe1110bc99b05034c3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c7e5ac737db25d7387fe517cb5207706782b6cf8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e595ff350b2fd600823ee8491df7df693ae4b7c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f4ee84f27625ce1fdf41e8483fa0561a1b837d10"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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