Vulnerability-Lookup

GHSA-8X93-8JFM-FWVW

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

s390/ism: folio_put() after error

dmb->cpu_addr was allocated via folio_alloc(). Use folio_put() instead of kfree() in the error exit of ism_alloc_dmb() to avoid slab allocator corruption.

While at it, reset dmb->cpu_addr after folio_put to avoid unintentional UAF by future callers.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98024"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:30Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: folio_put() after error\n\ndmb-\u003ecpu_addr was allocated via folio_alloc(). Use folio_put() instead of\nkfree() in the error exit of ism_alloc_dmb() to avoid slab allocator\ncorruption.\n\nWhile at it, reset dmb-\u003ecpu_addr after folio_put to avoid unintentional UAF\nby future callers.",
  "id": "GHSA-8x93-8jfm-fwvw",
  "modified": "2026-09-25T12:31:33Z",
  "published": "2026-09-25T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98024"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60983356fab0c1171c5cb1b56a36349ebadc608e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/890e2ef726904d1d8328e4b9f5090eeb8761b9d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/907a56ab3eb8a58500a58daa76087f17bb2b6826"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eebb6a9017b55ac05be770cf7b89f9da49505ae7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98024 (GCVE-0-2026-98024)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23

Title

s390/ism: folio_put() after error

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/ism: folio_put() after error dmb->cpu_addr was allocated via folio_alloc(). Use folio_put() instead of kfree() in the error exit of ism_alloc_dmb() to avoid slab allocator corruption. While at it, reset dmb->cpu_addr after folio_put to avoid unintentional UAF by future callers.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/890e2ef726904d1d8…
https://git.kernel.org/stable/c/eebb6a9017b55ac05…
https://git.kernel.org/stable/c/60983356fab0c1171…
https://git.kernel.org/stable/c/907a56ab3eb8a5850…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 83781384a96b95e2b6403d3c8a002b2c89031770 , < 890e2ef726904d1d8328e4b9f5090eeb8761b9d1 (git) Affected: 83781384a96b95e2b6403d3c8a002b2c89031770 , < eebb6a9017b55ac05be770cf7b89f9da49505ae7 (git) Affected: 83781384a96b95e2b6403d3c8a002b2c89031770 , < 60983356fab0c1171c5cb1b56a36349ebadc608e (git) Affected: 83781384a96b95e2b6403d3c8a002b2c89031770 , < 907a56ab3eb8a58500a58daa76087f17bb2b6826 (git) Affected: 121fb75414ab8debafd548bded9d888cd5a8f165 (git) Affected: f3e23edc4917f72139b805f208aeadf23376a0b5 (git) Affected: 6.6.29 , < 6.7 (semver) Affected: 6.8.8 , < 6.9 (semver)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/net/ism_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "83781384a96b95e2b6403d3c8a002b2c89031770",
              "versionType": "git"
            },
            {
              "lessThan": "eebb6a9017b55ac05be770cf7b89f9da49505ae7",
              "status": "affected",
              "version": "83781384a96b95e2b6403d3c8a002b2c89031770",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "83781384a96b95e2b6403d3c8a002b2c89031770",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "83781384a96b95e2b6403d3c8a002b2c89031770",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "121fb75414ab8debafd548bded9d888cd5a8f165",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f3e23edc4917f72139b805f208aeadf23376a0b5",
              "versionType": "git"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.29",
              "versionType": "semver"
            },
            {
              "lessThan": "6.9",
              "status": "affected",
              "version": "6.8.8",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/net/ism_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                  "versionStartIncluding": "6.8.8",
                  "vulnerable": true
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: folio_put() after error\n\ndmb-\u003ecpu_addr was allocated via folio_alloc(). Use folio_put() instead of\nkfree() in the error exit of ism_alloc_dmb() to avoid slab allocator\ncorruption.\n\nWhile at it, reset dmb-\u003ecpu_addr after folio_put to avoid unintentional UAF\nby future callers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:23:43.306Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/eebb6a9017b55ac05be770cf7b89f9da49505ae7"
        },
        {
          "url": "https://git.kernel.org/stable/c/60983356fab0c1171c5cb1b56a36349ebadc608e"
        },
        {
          "url": "https://git.kernel.org/stable/c/907a56ab3eb8a58500a58daa76087f17bb2b6826"
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      ],
      "title": "s390/ism: folio_put() after error",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98024",
    "datePublished": "2026-09-25T10:23:43.306Z",
    "dateReserved": "2026-09-25T10:19:56.070Z",
    "dateUpdated": "2026-09-25T10:23:43.306Z",
    "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.

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-8X93-8JFM-FWVW

CVE-2026-98024 (GCVE-0-2026-98024)

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