CVE-2026-99045 (GCVE-0-2026-99045)
Vulnerability from cvelistv5
Published
2026-10-23 12:22
Modified
2026-10-30 12:41
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ibmveth: h_free logical LAN on open-fail after register ibmveth_open() registers the logical LAN, then allocates the RX buffer pools. A pool failure jumps to out_free_buffer_pools without h_free_logical_lan(), so PHYP still owns the buffer-list page when it is unmapped. request_irq() failure already issued the hypercall before taking the same label. Move that h_free to the shared post-register unwind so both paths deregister before the buffer list is unmapped.
References
Impacted products
Vendor Product Version
Linux Linux Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
Version: d43732ce021f4244a4c53a45d57ad0c13c30ed94
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/ibm/ibmveth.c"
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
            {
              "lessThan": "4.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
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            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
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              "lessThanOrEqual": "7.2.*",
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              "version": "7.2.11",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "4.13",
                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nibmveth: h_free logical LAN on open-fail after register\n\nibmveth_open() registers the logical LAN, then allocates the RX\nbuffer pools. A pool failure jumps to out_free_buffer_pools without\nh_free_logical_lan(), so PHYP still owns the buffer-list page when\nit is unmapped. request_irq() failure already issued the hypercall\nbefore taking the same label.\n\nMove that h_free to the shared post-register unwind so both paths\nderegister before the buffer list is unmapped."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:41:16.971Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/073df7871a7023298ce27cfa518fbc30cc155651"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bd67d324d952101b3431c796d79f5e329bba159"
        },
        {
          "url": "https://git.kernel.org/stable/c/eae138e880686ce19879aa0d158fa3c73516f632"
        },
        {
          "url": "https://git.kernel.org/stable/c/decb4d4ead2c71ef698727734ab5024a872eb372"
        },
        {
          "url": "https://git.kernel.org/stable/c/c54bbdf6f0731102a4bf7f5e4ee535b3ea415996"
        },
        {
          "url": "https://git.kernel.org/stable/c/a065bd31ec462f6f9c267026b708dd020f122723"
        },
        {
          "url": "https://git.kernel.org/stable/c/d24fdec1413c656d29298097926e77542785ca0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/af0524bf4ce1a4cbd2946aa81751582951cfcab5"
        }
      ],
      "title": "ibmveth: h_free logical LAN on open-fail after register",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99045",
    "datePublished": "2026-10-23T12:22:09.352Z",
    "dateReserved": "2026-09-25T10:25:14.387Z",
    "dateUpdated": "2026-10-30T12:41:16.971Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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