Vulnerability-Lookup

GHSA-P7RQ-PJMQ-P6GW

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:

Input: xpad - fix out-of-bounds access for Share button

xpadone_process_packet() receives len directly from urb->actual_length and uses it to index the share-button byte at data[len - 18] or data[len - 26]. Since both len and data[0] are under the device's control, a broken controller can send a GIP_CMD_INPUT packet with actual_length < 18 (e.g. 5 bytes) and reach this code path, causing accesses beyond the actual array.

Fix this by calculating the offset and checking bounds against the packet length.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63943"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:12Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: xpad - fix out-of-bounds access for Share button\n\nxpadone_process_packet() receives len directly from urb-\u003eactual_length\nand uses it to index the share-button byte at data[len - 18] or\ndata[len - 26]. Since both len and data[0] are under the device\u0027s\ncontrol, a broken controller can send a GIP_CMD_INPUT packet with\nactual_length \u003c 18 (e.g. 5 bytes) and reach this code path, causing\naccesses beyond the actual array.\n\nFix this by calculating the offset and checking bounds against the\npacket length.",
  "id": "GHSA-p7rq-pjmq-p6gw",
  "modified": "2026-07-19T18:31:47Z",
  "published": "2026-07-19T18:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63943"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37ec54abfdd63a63fd50734a9c4e4cbc1e5795af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6346b0895b574ce45f3747b9c508c72f70e6abef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cdc46b38cf146ce81d4831b6472dbf7731849a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9749db57233b396353ad5dee81eec9d9880c9246"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcfb4833cd4078a1a356ef451838b75cd233099e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63943 (GCVE-0-2026-63943)

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

Title

Input: xpad - fix out-of-bounds access for Share button

Summary

In the Linux kernel, the following vulnerability has been resolved: Input: xpad - fix out-of-bounds access for Share button xpadone_process_packet() receives len directly from urb->actual_length and uses it to index the share-button byte at data[len - 18] or data[len - 26]. Since both len and data[0] are under the device's control, a broken controller can send a GIP_CMD_INPUT packet with actual_length < 18 (e.g. 5 bytes) and reach this code path, causing accesses beyond the actual array. Fix this by calculating the offset and checking bounds against the packet length.

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/bcfb4833cd4078a1a…
https://git.kernel.org/stable/c/37ec54abfdd63a63f…
https://git.kernel.org/stable/c/9749db57233b39635…
https://git.kernel.org/stable/c/6346b0895b574ce45…
https://git.kernel.org/stable/c/6cdc46b38cf146ce8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cbc82e7db16d59c301457312a624a7de2c03cd4a , < bcfb4833cd4078a1a356ef451838b75cd233099e (git) Affected: 302a0cd0bbc450998429a3f4267970a4b93251a8 , < 37ec54abfdd63a63fd50734a9c4e4cbc1e5795af (git) Affected: 4ef46367073b107ec22f46fe5f12176e87c238e8 , < 9749db57233b396353ad5dee81eec9d9880c9246 (git) Affected: 4ef46367073b107ec22f46fe5f12176e87c238e8 , < 6346b0895b574ce45f3747b9c508c72f70e6abef (git) Affected: 4ef46367073b107ec22f46fe5f12176e87c238e8 , < 6cdc46b38cf146ce81d4831b6472dbf7731849a2 (git) Affected: a7e3ddd1d9a3d0b26465ed01d464e3c05479ebc8 (git) Affected: 6.6.91 , < 6.6.143 (semver) Affected: 6.12.29 , < 6.12.93 (semver) Affected: 6.14.7 , < 6.15 (semver)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/joystick/xpad.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a7e3ddd1d9a3d0b26465ed01d464e3c05479ebc8",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "6.6.91",
              "versionType": "semver"
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              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "6.14.7",
              "versionType": "semver"
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/joystick/xpad.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
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              "status": "unaffected",
              "version": "0",
              "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": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: xpad - fix out-of-bounds access for Share button\n\nxpadone_process_packet() receives len directly from urb-\u003eactual_length\nand uses it to index the share-button byte at data[len - 18] or\ndata[len - 26]. Since both len and data[0] are under the device\u0027s\ncontrol, a broken controller can send a GIP_CMD_INPUT packet with\nactual_length \u003c 18 (e.g. 5 bytes) and reach this code path, causing\naccesses beyond the actual array.\n\nFix this by calculating the offset and checking bounds against the\npacket length."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/9749db57233b396353ad5dee81eec9d9880c9246"
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        },
        {
          "url": "https://git.kernel.org/stable/c/6cdc46b38cf146ce81d4831b6472dbf7731849a2"
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      "title": "Input: xpad - fix out-of-bounds access for Share button",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63943",
    "datePublished": "2026-07-19T14:55:38.411Z",
    "dateReserved": "2026-07-19T07:54:57.022Z",
    "dateUpdated": "2026-07-19T14:55:38.411Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-P7RQ-PJMQ-P6GW

CVE-2026-63943 (GCVE-0-2026-63943)

Tags

Sightings

Nomenclature