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CVE-2026-98077

Estado: En análisisSin puntuar—

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

netfilter: nf_conntrack_sip: fix OOB read in sip_skip_whitespace()

sip_skip_whitespace() returns dptr unchanged when its own loop exhausts the buffer (dptr == limit), instead of NULL like its sibling sip_follow_continuation() returns on its own "no more data" path.

ct_sip_get_header() only checks for NULL after calling it:

so a recognized header name followed only by spaces/tabs running to the exact end of the SIP payload, with no colon, makes the very next statement read one byte past the buffer.

Make both "no more data" outcomes return NULL, matching the convention sip_follow_continuation() already uses and that both existing callers already check for.

Detalles técnicos trazas, registros y código del informe original
  dptr = sip_skip_whitespace(dptr, limit);
  if (dptr == NULL)
          break;
  if (*dptr != ':' || ++dptr >= limit)
          break;

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-2026-98077",
  "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": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "9ae0a87e6f513293677fe286729fbae34d592215",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "b6277622b7323000895b674321c9a1f060553188",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "0cfb96a118c5c6d46d7a1cfdfa18355ad734ca79",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "c6beb08b1a9fdb96795816d8329ed75dd785d48e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "60c012b2d05e1558b0f30ea3f15a2c3ca2f24d94",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "4be8380e3af008f418f97992c06f23be649a430d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "4a30aa2ba007db18210dd52219ecbd5528c03523",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ea45f12a2766dae54e5426a23e8f4bafdbe2782e",
              "lessThan": "e8f8231824b5815f57ce62cba116e511b10196de",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/netfilter/nf_conntrack_sip.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.26"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.26",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/netfilter/nf_conntrack_sip.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-25T11:17:37.090",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0cfb96a118c5c6d46d7a1cfdfa18355ad734ca79",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4a30aa2ba007db18210dd52219ecbd5528c03523",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4be8380e3af008f418f97992c06f23be649a430d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/60c012b2d05e1558b0f30ea3f15a2c3ca2f24d94",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9ae0a87e6f513293677fe286729fbae34d592215",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b6277622b7323000895b674321c9a1f060553188",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c6beb08b1a9fdb96795816d8329ed75dd785d48e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8f8231824b5815f57ce62cba116e511b10196de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Undergoing Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_sip: fix OOB read in sip_skip_whitespace()\n\nsip_skip_whitespace() returns dptr unchanged when its own loop\nexhausts the buffer (dptr == limit), instead of NULL like its sibling\nsip_follow_continuation() returns on its own \"no more data\" path.\n\nct_sip_get_header() only checks for NULL after calling it:\n\n  dptr = sip_skip_whitespace(dptr, limit);\n  if (dptr == NULL)\n          break;\n  if (*dptr != ':' || ++dptr >= limit)\n          break;\n\nso a recognized header name followed only by spaces/tabs running to\nthe exact end of the SIP payload, with no colon, makes the very next\nstatement read one byte past the buffer.\n\nMake both \"no more data\" outcomes return NULL, matching the\nconvention sip_follow_continuation() already uses and that both\nexisting callers already check for."
    }
  ],
  "lastModified": "2026-10-03T11:18:29.300",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}