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GHSA-88FF-F8F3-F4QH

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31

Details

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

s390/uv: Prevent potential out-of-bounds read

When the system has more than 85 secrets, the uv_secret_list struct array only holds up to 85 items per page, resulting in an out of bounds read in find_secret_in_page if the targeted secret is in the next page or not stored at all.

Fix this by looping over the number of stored secrets which is the per sub-list count of stored secrets and not the overall count.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98648"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/uv: Prevent potential out-of-bounds read\n\nWhen the system has more than 85 secrets, the uv_secret_list struct\narray only holds up to 85 items per page, resulting in an out of bounds\nread in find_secret_in_page if the targeted secret is in the next page\nor not stored at all.\n\nFix this by looping over the number of stored secrets which is the\nper sub-list count of stored secrets and not the overall count.",
  "id": "GHSA-88ff-f8f3-f4qh",
  "modified": "2026-10-18T18:31:58Z",
  "published": "2026-10-18T18:31:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98648"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/116bba758533a139bbede8d717a1371bd6d890f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f47190b08b71e8482072978373ee88cb2dfbdaf4"
    }
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  "schema_version": "1.4.0",
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}

CVE-2026-98648 (GCVE-0-2026-98648)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:20 – Updated: 2026-10-19 09:23

Title

s390/uv: Prevent potential out-of-bounds read

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/uv: Prevent potential out-of-bounds read When the system has more than 85 secrets, the uv_secret_list struct array only holds up to 85 items per page, resulting in an out of bounds read in find_secret_in_page if the targeted secret is in the next page or not stored at all. Fix this by looping over the number of stored secrets which is the per sub-list count of stored secrets and not the overall count.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/04bb5b2eb9f1d5611…
https://git.kernel.org/stable/c/116bba758533a139b…
https://git.kernel.org/stable/c/f47190b08b71e8482…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d , < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f (git) Affected: 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d , < 116bba758533a139bbede8d717a1371bd6d890f6 (git) Affected: 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d , < f47190b08b71e8482072978373ee88cb2dfbdaf4 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/kernel/uv.c"
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          "vendor": "Linux",
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            },
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          "versions": [
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            },
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              "version": "7.2.9",
              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
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                }
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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.

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