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GHSA-P8Q7-QQP3-R9V3

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-11 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

iomap: don't free integrity payload that doesn't exist

fs_bio_integrity_alloc might not allocate a bio integrity payload if PI verification is disabled on the block device. Check for that case before calling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to avoid a NULL pointer dereferences.

Make the branch cover the PI verification as well - while fs_bio_integrity_verify works without an integrity payload, it requires one to actually do useful work.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89770"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:20:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niomap: don\u0027t free integrity payload that doesn\u0027t exist\n\nfs_bio_integrity_alloc might not allocate a bio integrity payload if PI\nverification is disabled on the block device.  Check for that case before\ncalling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to\navoid a NULL pointer dereferences.\n\nMake the branch cover the PI verification as well - while\nfs_bio_integrity_verify works without an integrity payload, it requires\none to actually do useful work.",
  "id": "GHSA-p8q7-qqp3-r9v3",
  "modified": "2026-09-11T21:31:39Z",
  "published": "2026-09-11T21:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89770"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-89770 (GCVE-0-2026-89770)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:47 – Updated: 2026-09-11 19:47

Title

iomap: don't free integrity payload that doesn't exist

Summary

In the Linux kernel, the following vulnerability has been resolved: iomap: don't free integrity payload that doesn't exist fs_bio_integrity_alloc might not allocate a bio integrity payload if PI verification is disabled on the block device. Check for that case before calling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to avoid a NULL pointer dereferences. Make the branch cover the PI verification as well - while fs_bio_integrity_verify works without an integrity payload, it requires one to actually do useful work.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/65651f1001aa36389…
https://git.kernel.org/stable/c/8a8685b32c0718cc7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0b10a370529cbd7b918c1eef43d409e43d9e0b78 , < 65651f1001aa3638909bc58c7b2b46160692757b (git) Affected: 0b10a370529cbd7b918c1eef43d409e43d9e0b78 , < 8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d (git)
Linux	Linux	Affected: 7.1 Unaffected: 0 , < 7.1 (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/iomap/bio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "65651f1001aa3638909bc58c7b2b46160692757b",
              "status": "affected",
              "version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78",
              "versionType": "git"
            },
            {
              "lessThan": "8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d",
              "status": "affected",
              "version": "0b10a370529cbd7b918c1eef43d409e43d9e0b78",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/iomap/bio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "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": "7.2.4",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niomap: don\u0027t free integrity payload that doesn\u0027t exist\n\nfs_bio_integrity_alloc might not allocate a bio integrity payload if PI\nverification is disabled on the block device.  Check for that case before\ncalling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to\navoid a NULL pointer dereferences.\n\nMake the branch cover the PI verification as well - while\nfs_bio_integrity_verify works without an integrity payload, it requires\none to actually do useful work."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T19:47:09.630Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d"
        }
      ],
      "title": "iomap: don\u0027t free integrity payload that doesn\u0027t exist",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89770",
    "datePublished": "2026-09-11T19:47:09.630Z",
    "dateReserved": "2026-09-11T19:38:34.765Z",
    "dateUpdated": "2026-09-11T19:47:09.630Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

Action not permitted

GHSA-P8Q7-QQP3-R9V3

CVE-2026-89770 (GCVE-0-2026-89770)

Tags

Sightings

Nomenclature