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CVE-2026-89618

Estado: RecibidaSin puntuar—

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

eventfs: Initialize ei->children and ei->list in init_ei()

eventfs_create_dir() allocates the eventfs_inode and initializes it with init_ei(). But this does not initialize the eventfs_inode list_heads. If the eventfs_create_dir() fails due to memory pressure, it will call free_ei() before it initialized the lists, and that checks to make sure the eventfs_inode has no children. But because the list wasn't initialized, it will give a false warning.

Fix it by moving the list initialization into init_ei().

[ Rewrote change log ]

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)

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{
  "id": "CVE-2026-89618",
  "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": "35ee34c0f6d578c9d245438ca29bf2e7024a5a65",
              "lessThan": "069729282fbecfaa8a54062266c338ed23f08005",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5790b1fb3d672d9a1fe3881a7181dfdbe741568f",
              "lessThan": "c480f8af173d5b19c6d9c4311df6bbe352face9e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5790b1fb3d672d9a1fe3881a7181dfdbe741568f",
              "lessThan": "5333e18e6b425fcc39c7fea89e3949a2a98bc5e4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5790b1fb3d672d9a1fe3881a7181dfdbe741568f",
              "lessThan": "76e0f85f650738d768449dbccbc7c55d05f5b609",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5790b1fb3d672d9a1fe3881a7181dfdbe741568f",
              "lessThan": "1704aaaf5d22bc765c168402350d191e24e245bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.6.18",
              "lessThan": "6.6.157",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/tracefs/event_inode.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.7",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/tracefs/event_inode.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:19:47.040",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/069729282fbecfaa8a54062266c338ed23f08005",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1704aaaf5d22bc765c168402350d191e24e245bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5333e18e6b425fcc39c7fea89e3949a2a98bc5e4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/76e0f85f650738d768449dbccbc7c55d05f5b609",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c480f8af173d5b19c6d9c4311df6bbe352face9e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Initialize ei->children and ei->list in init_ei()\n\neventfs_create_dir() allocates the eventfs_inode and initializes it with\ninit_ei(). But this does not initialize the eventfs_inode list_heads. If\nthe eventfs_create_dir() fails due to memory pressure, it will call\nfree_ei() before it initialized the lists, and that checks to make sure\nthe eventfs_inode has no children. But because the list wasn't\ninitialized, it will give a false warning.\n\nFix it by moving the list initialization into init_ei().\n\n[ Rewrote change log ]"
    }
  ],
  "lastModified": "2026-09-14T13:19:15.857",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}