FKIE_CVE-2026-63860

Vulnerability from fkie_nvd - Published: 2026-07-19 15:16 - Updated: 2026-07-20 15:16
Severity
8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/137b5918931d4d05aa8ea8d3adf67f7224eef63c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5877c043398d5fa0e93919a3d837e5cd7a98a961
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ed3d14fc45d3da6025e7fe4a6a09066856698e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87111356d58d86edb221ba144d261ed83a5b8bbe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abda65bdd13084c771842adaac1f652d0660dd82
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c26a0052cceed4c4d380ee5808b699f937fb58d8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2c7b39dde2e61df8157066969cc2a408cd3dcd9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwpm_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "87111356d58d86edb221ba144d261ed83a5b8bbe",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "abda65bdd13084c771842adaac1f652d0660dd82",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "137b5918931d4d05aa8ea8d3adf67f7224eef63c",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "5877c043398d5fa0e93919a3d837e5cd7a98a961",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "f2c7b39dde2e61df8157066969cc2a408cd3dcd9",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "c26a0052cceed4c4d380ee5808b699f937fb58d8",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            },
            {
              "lessThan": "6ed3d14fc45d3da6025e7fe4a6a09066856698e2",
              "status": "affected",
              "version": "30dc5e63d6a5ad24894b5512d10b228d73645a44",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwpm_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "lessThan": "3.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nRDMA/core: Prefer NLA_NUL_STRING\n\nThese attributes are evaluated as c-string (passed to strcmp), but\nNLA_STRING doesn\u0027t check for the presence of a \\0 terminator.\n\nEither this needs to switch to nla_strcmp() and needs to adjust printf fmt\nspecifier to not use plain %s, or this needs to use NLA_NUL_STRING.\n\nAs the code has been this way for long time, it seems to me that userspace\ndoes include the terminating nul, even tough its not enforced so far, and\nthus NLA_NUL_STRING use is the simpler solution."
    }
  ],
  "id": "CVE-2026-63860",
  "lastModified": "2026-07-20T15:16:52.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T15:16:52.850",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/137b5918931d4d05aa8ea8d3adf67f7224eef63c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5877c043398d5fa0e93919a3d837e5cd7a98a961"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ed3d14fc45d3da6025e7fe4a6a09066856698e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/87111356d58d86edb221ba144d261ed83a5b8bbe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/abda65bdd13084c771842adaac1f652d0660dd82"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c26a0052cceed4c4d380ee5808b699f937fb58d8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f2c7b39dde2e61df8157066969cc2a408cd3dcd9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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