CVE-2026-68327 (GCVE-0-2026-68327)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:33
VLAI
Title
wan: wanxl: Only reset hardware after BAR mapping
Summary
In the Linux kernel, the following vulnerability has been resolved: wan: wanxl: Only reset hardware after BAR mapping wanxl_pci_init_one() stores the freshly allocated card in driver data before the PLX BAR is mapped. Several early probe failures then unwind through wanxl_pci_remove_one(), including failure to allocate the coherent status area or to restore the DMA mask. wanxl_pci_remove_one() unconditionally calls wanxl_reset(), and wanxl_reset() dereferences card->plx. On those early failures card->plx is still NULL, so the error path can dereference a NULL MMIO pointer. Only issue the hardware reset once the BAR mapping exists. The remaining cleanup in wanxl_pci_remove_one() already checks whether later resources were allocated. This issue was found by a static analysis checker and confirmed by manual source review.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3d9617d856ebddcdddbab0ce877c397420f59f55 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 897e289db1e4d00ca6419cfe733c646492147270 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f4834132773f15ffb255127499c8443947fa7d0f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b9e2ff70e96acf83693b27987e0390bad9f83efa (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 59cbe6cfa0fa23c192351cc284e30707309f6741 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2fe22d58b3797d741570f9873b26653fd511576c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 91957b89da995607cb654b1f9a3c126ddbaee10f (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "vendor": "Linux",
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              "version": "2.6.12"
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              "version": "7.2",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwan: wanxl: Only reset hardware after BAR mapping\n\nwanxl_pci_init_one() stores the freshly allocated card in driver data\nbefore the PLX BAR is mapped.  Several early probe failures then unwind\nthrough wanxl_pci_remove_one(), including failure to allocate the coherent\nstatus area or to restore the DMA mask.\n\nwanxl_pci_remove_one() unconditionally calls wanxl_reset(), and\nwanxl_reset() dereferences card-\u003eplx.  On those early failures card-\u003eplx\nis still NULL, so the error path can dereference a NULL MMIO pointer.\n\nOnly issue the hardware reset once the BAR mapping exists.  The remaining\ncleanup in wanxl_pci_remove_one() already checks whether later resources\nwere allocated.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:33:23.256Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523"
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        {
          "url": "https://git.kernel.org/stable/c/3d9617d856ebddcdddbab0ce877c397420f59f55"
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          "url": "https://git.kernel.org/stable/c/91957b89da995607cb654b1f9a3c126ddbaee10f"
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      "title": "wan: wanxl: Only reset hardware after BAR mapping",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68327",
    "datePublished": "2026-08-10T12:03:03.398Z",
    "dateReserved": "2026-07-30T09:28:09.382Z",
    "dateUpdated": "2026-08-19T16:33:23.256Z",
    "state": "PUBLISHED"
  },
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The remaining\\ncleanup in wanxl_pci_remove_one() already checks whether later resources\\nwere allocated.\\n\\nThis issue was found by a static analysis checker and confirmed by\\nmanual source review.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wan/wanxl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"3d9617d856ebddcdddbab0ce877c397420f59f55\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"897e289db1e4d00ca6419cfe733c646492147270\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"f4834132773f15ffb255127499c8443947fa7d0f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"b9e2ff70e96acf83693b27987e0390bad9f83efa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"59cbe6cfa0fa23c192351cc284e30707309f6741\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"2fe22d58b3797d741570f9873b26653fd511576c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"91957b89da995607cb654b1f9a3c126ddbaee10f\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wan/wanxl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.265\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.216\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.183\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.42\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.6\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2fe22d58b3797d741570f9873b26653fd511576c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d9617d856ebddcdddbab0ce877c397420f59f55\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/59cbe6cfa0fa23c192351cc284e30707309f6741\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/897e289db1e4d00ca6419cfe733c646492147270\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/91957b89da995607cb654b1f9a3c126ddbaee10f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b9e2ff70e96acf83693b27987e0390bad9f83efa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef394eeb9d5ec6db8d979eec6d27f56c2ebc6523\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f4834132773f15ffb255127499c8443947fa7d0f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-08-11T16:47:52+00:00",
      "cve": "CVE-2026-68327",
      "id": "CVE-2026-68327",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wan: wanxl: Only reset hardware after BAR mapping",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68327.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.