FKIE_CVE-2023-53817

Vulnerability from fkie_nvd - Published: 2025-12-09 01:16 - Updated: 2026-06-17 06:46
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "lib/crypto/mpi/mpi-cmp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fde791e8a96a64ea7b0ad2440e43586447a209c6",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "ae63e84ffda74267bf7277c38415ba38389229a0",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "61f5453e9706e99713825594e0c8f9031485fb5f",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "0fc7147c694394f8a8cbc19570c6bc918cac0906",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "67589d247909043e94d2dd5fb590958e0f99d58d",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "d3ad023a39f1127dcfd331c562673355dc078650",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "12ac013ad7ff0df066451e825801d805095b3776",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            },
            {
              "lessThan": "9e47a758b70167c9301d2b44d2569f86c7796f2d",
              "status": "affected",
              "version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "lib/crypto/mpi/mpi-cmp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.7"
            },
            {
              "lessThan": "3.7",
              "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\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u-\u003ed to be dereferenced towards the end of mpi_cmp_ui()"
    }
  ],
  "id": "CVE-2023-53817",
  "lastModified": "2026-06-17T06:46:07.410",
  "metrics": {},
  "published": "2025-12-09T01:16:53.960",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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