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CVE-2026-90416

Estado: RecibidaSin puntuar—

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

RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs

get_param() reads a congestion parameter as a u32 but formats it with the signed "%d" into an 11-byte stack buffer. A value with bit 31 set, such as 0x80000000, renders as "-2147483648\n" whose full length is 12. snprintf() stores only 11 bytes yet returns 12, so simple_read_from_buffer() treats 12 bytes as valid and reads one byte past lbuf[].

Size the buffer for the widest unsigned decimal, format with "%u" to match the u32, and use scnprintf() so the length passed to simple_read_from_buffer() reflects the bytes actually stored.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-90416",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "1c5b4f76cd73372c5a8a4c91c95d5a31f141e091",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "06b62758f81e27ca4c81201c22e3436c6d9ac894",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "d809cf3f0ed9255abfc73c4730bcf187151422af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "0b0122fcc923a0271130f5fb71af2cd7e20434d9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "ce8dfd32a33b578c3abf178f67b4c8d36854f041",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "4599311e78e88c893ad551aca622de2bfdf1c31f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "c75ee076fa09778a2f9602a972dade4a0b0785f7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a2da0b8c0782816f3ae6846ae7942fcbb0f8172",
              "lessThan": "03826bc1fa6c90405bf05831f2b501a8368dcd27",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/infiniband/hw/mlx5/cong.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/infiniband/hw/mlx5/cong.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:45.880",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/03826bc1fa6c90405bf05831f2b501a8368dcd27",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/06b62758f81e27ca4c81201c22e3436c6d9ac894",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0b0122fcc923a0271130f5fb71af2cd7e20434d9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1c5b4f76cd73372c5a8a4c91c95d5a31f141e091",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4599311e78e88c893ad551aca622de2bfdf1c31f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c75ee076fa09778a2f9602a972dade4a0b0785f7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce8dfd32a33b578c3abf178f67b4c8d36854f041",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d809cf3f0ed9255abfc73c4730bcf187151422af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs\n\nget_param() reads a congestion parameter as a u32 but formats it with the\nsigned \"%d\" into an 11-byte stack buffer. A value with bit 31 set, such as\n0x80000000, renders as \"-2147483648\\n\" whose full length is 12. snprintf()\nstores only 11 bytes yet returns 12, so simple_read_from_buffer() treats 12\nbytes as valid and reads one byte past lbuf[].\n\nSize the buffer for the widest unsigned decimal, format with \"%u\" to match\nthe u32, and use scnprintf() so the length passed to\nsimple_read_from_buffer() reflects the bytes actually stored."
    }
  ],
  "lastModified": "2026-09-17T17:17:45.880",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}