CVE-2026-93278

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown cvm_oct_rx_shutdown calls free_irq and netif_napi_del without disabling the napi instance first. As the free_irq only waits for completion of hard interrupt handlers, the napi poll function could still be active. If cvm_oct_remove proceeds to free the plat structure (which holds the NAPI instances), the active poll function will access freed memory, resulting in a use-after-free crash.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-24 16:17:25.017000

Last modified

2026-10-19 10:17:19.330000

View original CVE JSON

{
  "id": "CVE-2026-93278",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-24T16:17:25.017",
  "lastModified": "2026-10-19T10:17:19.330",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: octeon: add missing napi_disable in cvm_oct_rx_shutdown\n\ncvm_oct_rx_shutdown calls free_irq and netif_napi_del without\ndisabling the napi instance first. As the free_irq only waits\nfor completion of hard interrupt handlers, the napi poll\nfunction could still be active. If cvm_oct_remove proceeds to\nfree the plat structure (which holds the NAPI instances), the\nactive poll function will access freed memory, resulting in a\nuse-after-free crash."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/staging/octeon/ethernet-rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3368c784bcf77124aaf39372e627016c36bd4472",
              "lessThan": "158389d7af04bbf0664d91c2ce31fcc9eeace1eb",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3368c784bcf77124aaf39372e627016c36bd4472",
              "lessThan": "c124049c3a7006fd6caf629139a5722610bbffb4",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3368c784bcf77124aaf39372e627016c36bd4472",
              "lessThan": "98f9036b2254c928cb44da0c77dba38f66f7d8f1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3368c784bcf77124aaf39372e627016c36bd4472",
              "lessThan": "b38fbd68cc36b4f478a1e3cfc169b8616ae1337d",
              "versionType": "git",
              "status": "affected"
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              "lessThan": "89f9f433271fad9351de6a3c713b45b2cfb23e4a",
              "versionType": "git",
              "status": "affected"
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            {
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              "lessThan": "b2243ffaac14cc3639b5b32a371aac37f96ee554",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3368c784bcf77124aaf39372e627016c36bd4472",
              "lessThan": "c0a9a8586a63fda49e61a6b83360feac2a60d898",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/staging/octeon/ethernet-rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "2.6.34",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "2.6.34",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.221",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.188",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.52",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/158389d7af04bbf0664d91c2ce31fcc9eeace1eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/89f9f433271fad9351de6a3c713b45b2cfb23e4a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/98f9036b2254c928cb44da0c77dba38f66f7d8f1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b2243ffaac14cc3639b5b32a371aac37f96ee554",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b38fbd68cc36b4f478a1e3cfc169b8616ae1337d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c0a9a8586a63fda49e61a6b83360feac2a60d898",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c124049c3a7006fd6caf629139a5722610bbffb4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}