Vulnerability-Lookup

GHSA-F4C5-JPX2-JVRG

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-30 15:33

Details

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

iio: buffer: Ensure bounce buffer used for unaligned case is zeroed.

iio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory to userspace if the data passed in is not a multiple of 8 bytes and the timestamp is enabled. Specify __GFP_ZERO for the devm_krealloc() to ensure any extra space is cleared.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98668"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: Ensure bounce buffer used for unaligned case is zeroed.\n\niio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory\nto userspace if the data passed in is not a multiple of 8 bytes and the\ntimestamp is enabled. Specify __GFP_ZERO for the devm_krealloc()\nto ensure any extra space is cleared.",
  "id": "GHSA-f4c5-jpx2-jvrg",
  "modified": "2026-10-30T15:33:54Z",
  "published": "2026-10-18T18:31:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98668"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a87212b1a09a1fdd730ce5520f7b1fc0b488511"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5330036bc68d23672bfcc16c60c54701ae123083"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b134ef820610bd873c9d59999d9824710964ce82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4f53cec8cc94b37601ce0bb2b272b6753beed98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b953b8d5e6f2d53e81faa0f3b42856cdf16fe563"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98668 (GCVE-0-2026-98668)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:44 – Updated: 2026-10-30 12:38

Title

iio: buffer: Ensure bounce buffer used for unaligned case is zeroed.

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Ensure bounce buffer used for unaligned case is zeroed. iio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory to userspace if the data passed in is not a multiple of 8 bytes and the timestamp is enabled. Specify __GFP_ZERO for the devm_krealloc() to ensure any extra space is cleared.

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

6 references

URL	Tags
https://git.kernel.org/stable/c/b953b8d5e6f2d53e8…
https://git.kernel.org/stable/c/b4f53cec8cc94b376…
https://git.kernel.org/stable/c/b5c2f21f645e40c70…
https://git.kernel.org/stable/c/b134ef820610bd873…
https://git.kernel.org/stable/c/3a87212b1a09a1fdd…
https://git.kernel.org/stable/c/5330036bc68d23672…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < b953b8d5e6f2d53e81faa0f3b42856cdf16fe563 (git) Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < b4f53cec8cc94b37601ce0bb2b272b6753beed98 (git) Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2 (git) Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < b134ef820610bd873c9d59999d9824710964ce82 (git) Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < 3a87212b1a09a1fdd730ce5520f7b1fc0b488511 (git) Affected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 , < 5330036bc68d23672bfcc16c60c54701ae123083 (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.191 , ≤ 6.1.* (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.56 , ≤ 6.18.* (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/iio/industrialio-buffer.c"
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          "vendor": "Linux",
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          "programFiles": [
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          "versions": [
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              "version": "5.16"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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          "nodes": [
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          "url": "https://git.kernel.org/stable/c/b4f53cec8cc94b37601ce0bb2b272b6753beed98"
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          "url": "https://git.kernel.org/stable/c/5330036bc68d23672bfcc16c60c54701ae123083"
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    "datePublished": "2026-10-18T15:44:55.291Z",
    "dateReserved": "2026-09-25T10:25:14.363Z",
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    "state": "PUBLISHED"
  },
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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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