CVE-2026-90080 (GCVE-0-2026-90080)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:05 – Updated: 2026-10-19 08:57
VLAI
Title
octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6639 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: efabce29015189cb5cd8066cf29eb1d754de6c3c , < b003d5b4e46ca5033859db601e12d36da24d0e40 (git)
Affected: efabce29015189cb5cd8066cf29eb1d754de6c3c , < 7e33c6bd049b532d2ec4916895ef07e538bed905 (git)
Affected: efabce29015189cb5cd8066cf29eb1d754de6c3c , < b09a0503c755b6609fad59a84cc7f05b6843a03c (git)
Affected: 9bd7273cf1f9c5761d696cca821d25602e8f7009 (git)
Affected: 6.14.9 , < 6.15 (semver)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
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          "product": "Linux",
          "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"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
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          "product": "Linux",
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            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"
          ],
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      "cpeApplicability": [
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              "operator": "OR"
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:57:36.840Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c"
        }
      ],
      "title": "octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup",
      "x_generator": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90080",
    "datePublished": "2026-09-17T16:05:58.199Z",
    "dateReserved": "2026-09-11T19:38:34.785Z",
    "dateUpdated": "2026-10-19T08:57:36.840Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-11-09",
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      "percentile": "0.10767"
    },
    "microsoft_vex": {
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      "id": "msrc_CVE-2026-90080",
      "initial_release_date": "2026-10-20T22:22:01.000Z",
      "product_status:under_investigation": "1",
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      "title": "octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90080.json",
      "version": "2"
    },
    "nvd": {
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                  "drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c",
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                  "drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c"
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          }
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        "cveTags": [],
        "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."
          }
        ],
        "id": "CVE-2026-90080",
        "lastModified": "2026-10-19T09:18:56.880",
        "metrics": {},
        "published": "2026-09-17T17:16:57.317",
        "references": [
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90080.json",
      "version": "3"
    }
  }
}



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