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CVE-2026-89924

Estado: RecibidaSin puntuar—

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

KVM: s390: Fix old_data leak in guest debug error path

__import_wp_info() allocates a per-watchpoint old_data buffer to back up the original guest memory contents. If a later watchpoint of the same KVM_SET_GUEST_DEBUG request fails to import, kvm_s390_import_bp_data() jumps to the error label, which frees the wp_info array but not the old_data buffers of the entries that were imported successfully. Up to MAX_BP_COUNT - 1 buffers of up to MAX_WP_SIZE bytes are leaked per failed request, and the request can be repeated.

Create error handling for cleaning up all created old_data memory areas.

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-2026-89924",
  "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": "27291e2165b6de70c476b7b675308113edd69a60",
              "lessThan": "124c81ee610e1fbdd93d4399f88d9e28ba97a941",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "27291e2165b6de70c476b7b675308113edd69a60",
              "lessThan": "e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "27291e2165b6de70c476b7b675308113edd69a60",
              "lessThan": "c85d402553987777cc4742751437ea5dcbf98a7b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "27291e2165b6de70c476b7b675308113edd69a60",
              "lessThan": "5fbf319137735252eefa507193c9a619af5b7457",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "4048d0a252163084794be3e37995b872c5178913",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/s390/kvm/guestdbg.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.16",
              "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": "6.18.51",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/s390/kvm/guestdbg.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:17:01.527",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix old_data leak in guest debug error path\n\n__import_wp_info() allocates a per-watchpoint old_data buffer to back up\nthe original guest memory contents. If a later watchpoint of the same\nKVM_SET_GUEST_DEBUG request fails to import, kvm_s390_import_bp_data()\njumps to the error label, which frees the wp_info array but not the\nold_data buffers of the entries that were imported successfully. Up to\nMAX_BP_COUNT - 1 buffers of up to MAX_WP_SIZE bytes are leaked per failed\nrequest, and the request can be repeated.\n\nCreate error handling for cleaning up all created old_data memory\nareas."
    }
  ],
  "lastModified": "2026-09-16T11:17:01.527",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}