CVE-2026-90267 (GCVE-0-2026-90267)
Vulnerability from cvelistv5
Published
2026-09-17 16:08
Modified
2026-10-30 12:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails sd_set_special_bvec() allocates a special payload page for UNMAP and WRITE SAME commands. If scsi_alloc_sgtables() fails afterward in sd_setup_unmap_cmnd() or sd_setup_write_same{10,16}_cmnd(), the SCSI midlayer does not call uninit_command() because RQF_DONTPREP is not set yet, leaking the page. Call sd_uninit_command() on error, and clear RQF_SPECIAL_PAYLOAD after freeing the page.
References
Impacted products
Vendor Product Version
Linux Linux Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
Version: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/sd.c"
          ],
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "6.1.191",
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              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.6.160",
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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\nscsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails\n\nsd_set_special_bvec() allocates a special payload page for UNMAP and\nWRITE SAME commands. If scsi_alloc_sgtables() fails afterward in\nsd_setup_unmap_cmnd() or sd_setup_write_same{10,16}_cmnd(), the SCSI\nmidlayer does not call uninit_command() because RQF_DONTPREP is not set\nyet, leaking the page.\n\nCall sd_uninit_command() on error, and clear RQF_SPECIAL_PAYLOAD after\nfreeing the page."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:35:01.469Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/05bc68669549bfddfdeef2fd119855cab3e9615a"
        },
        {
          "url": "https://git.kernel.org/stable/c/710a2448a06a8215ba8acb4a2791954800f7db0a"
        },
        {
          "url": "https://git.kernel.org/stable/c/744a65e113094756e6c1cfba9ff1bf4247cb68d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/e90f746f4ca3896ca560e820b7b6b0a467026938"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb31844d88b77138b67aa20c3600203baff40140"
        }
      ],
      "title": "scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90267",
    "datePublished": "2026-09-17T16:08:02.624Z",
    "dateReserved": "2026-09-11T19:38:34.796Z",
    "dateUpdated": "2026-10-30T12:35:01.469Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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