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GHSA-PF2C-JGX6-JJWQ

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90267"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:23Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-pf2c-jgx6-jjwq",
  "modified": "2026-09-17T18:31:58Z",
  "published": "2026-09-17T18:31:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90267"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb31844d88b77138b67aa20c3600203baff40140"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90267 (GCVE-0-2026-90267)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:08 – Updated: 2026-09-17 16:08

Title

scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails

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.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/5d7d1b8b525e5eff3…
https://git.kernel.org/stable/c/bb31844d88b77138b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 , < 5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d (git) Affected: 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 , < bb31844d88b77138b67aa20c3600203baff40140 (git)
Linux	Linux	Affected: 4.12 Unaffected: 0 , < 4.12 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/sd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d",
              "status": "affected",
              "version": "81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87",
              "versionType": "git"
            },
            {
              "lessThan": "bb31844d88b77138b67aa20c3600203baff40140",
              "status": "affected",
              "version": "81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/sd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": "2026-09-17T16:08:02.624Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "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": "2026-09-17T16:08:02.624Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-PF2C-JGX6-JJWQ

CVE-2026-90267 (GCVE-0-2026-90267)

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