Vulnerability-Lookup

GHSA-MJXG-C55Q-M7J2

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

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

USB: serial: mct_u232: fix missing interrupt-in transfer sanity check

Add the missing sanity check on the size of interrupt-in transfers to avoid parsing stale or uninitialised slab data (and leaking it to user space).

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63897"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: mct_u232: fix missing interrupt-in transfer sanity check\n\nAdd the missing sanity check on the size of interrupt-in transfers to\navoid parsing stale or uninitialised slab data (and leaking it to user\nspace).",
  "id": "GHSA-mjxg-c55q-m7j2",
  "modified": "2026-07-19T18:31:44Z",
  "published": "2026-07-19T18:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63897"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/245aba83e3c288e176ed037a1f6b618b09e92ed8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/631b8b7c456567f7a8d26f6fc354c8dd9cc9f832"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70bb9a2661d34b93a9b83cf83e2b76289a712ef0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82b48d70bced1ec8e5f676d1fd5eccc7a44dc418"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b93ee5baeef6efabee2c3381907733ad2dbc883"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a093f3e0c03d25a86d747a655d4b9322ffb2ed87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed260b56bc9fc878e5dcbb866eab8af0688e0e67"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f06bcaba29707f060706483b2020d3cafbe98f9f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63897 (GCVE-0-2026-63897)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-19 14:55

Title

USB: serial: mct_u232: fix missing interrupt-in transfer sanity check

Summary

In the Linux kernel, the following vulnerability has been resolved: USB: serial: mct_u232: fix missing interrupt-in transfer sanity check Add the missing sanity check on the size of interrupt-in transfers to avoid parsing stale or uninitialised slab data (and leaking it to user space).

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/82b48d70bced1ec8e…
https://git.kernel.org/stable/c/8b93ee5baeef6efab…
https://git.kernel.org/stable/c/a093f3e0c03d25a86…
https://git.kernel.org/stable/c/70bb9a2661d34b93a…
https://git.kernel.org/stable/c/631b8b7c456567f7a…
https://git.kernel.org/stable/c/f06bcaba29707f060…
https://git.kernel.org/stable/c/ed260b56bc9fc878e…
https://git.kernel.org/stable/c/245aba83e3c288e17…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 82b48d70bced1ec8e5f676d1fd5eccc7a44dc418 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8b93ee5baeef6efabee2c3381907733ad2dbc883 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a093f3e0c03d25a86d747a655d4b9322ffb2ed87 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 70bb9a2661d34b93a9b83cf83e2b76289a712ef0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 631b8b7c456567f7a8d26f6fc354c8dd9cc9f832 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f06bcaba29707f060706483b2020d3cafbe98f9f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ed260b56bc9fc878e5dcbb866eab8af0688e0e67 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 245aba83e3c288e176ed037a1f6b618b09e92ed8 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/serial/mct_u232.c"
          ],
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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      "providerMetadata": {
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    "datePublished": "2026-07-19T14:55:06.845Z",
    "dateReserved": "2026-07-19T07:54:57.019Z",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-MJXG-C55Q-M7J2

CVE-2026-63897 (GCVE-0-2026-63897)

Tags

Sightings

Nomenclature