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CVE-2026-90080

Estado: RecibidaSin puntuar—

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

octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup

af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is allocated during PF/VF probe. Representors and other non-AF_XDP paths leave the pointer NULL, but several call sites used test_bit() on it unconditionally.

Switching to devlink eswitch mode creates representors and runs otx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses when dereferencing the NULL bitmap. Add NULL checks before every af_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init paths.

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-2026-90080",
  "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": "efabce29015189cb5cd8066cf29eb1d754de6c3c",
              "lessThan": "b003d5b4e46ca5033859db601e12d36da24d0e40",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efabce29015189cb5cd8066cf29eb1d754de6c3c",
              "lessThan": "7e33c6bd049b532d2ec4916895ef07e538bed905",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efabce29015189cb5cd8066cf29eb1d754de6c3c",
              "lessThan": "b09a0503c755b6609fad59a84cc7f05b6843a03c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9bd7273cf1f9c5761d696cca821d25602e8f7009",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.14.9",
              "lessThan": "6.15",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "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/net/ethernet/marvell/octeontx2/nic/otx2_common.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:16:57.317",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup\n\naf_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is\nallocated during PF/VF probe. Representors and other non-AF_XDP paths\nleave the pointer NULL, but several call sites used test_bit() on it\nunconditionally.\n\nSwitching to devlink eswitch mode creates representors and runs\notx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses\nwhen dereferencing the NULL bitmap. Add NULL checks before every\naf_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init\npaths."
    }
  ],
  "lastModified": "2026-09-17T17:16:57.317",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}