CVE-2026-64274 (GCVE-0-2026-64274)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-08-17 04:52
VLAI
Title
Input: goodix - clamp the device-reported contact count
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: goodix - clamp the device-reported contact count goodix_ts_read_input_report() copies the number of touch points reported by the device into an on-stack buffer u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS]; which is sized for at most GOODIX_MAX_CONTACTS (10) contacts. The only runtime check bounds the per-interrupt count against ts->max_touch_num, but that value is taken verbatim from a 4-bit field of the device configuration block and is never clamped: ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f; The nibble can be 0..15, so a malfunctioning, malicious or counterfeit controller (or an attacker tampering with the I2C bus) can advertise up to 15 contacts. goodix_ts_read_input_report() then accepts a touch_num of up to 15 and the second goodix_i2c_read() writes ts->contact_size * (touch_num - 1) bytes past the one-contact header into point_data - up to 30 bytes (45 with the 9-byte report format) beyond the 92-byte buffer: a stack out-of-bounds write. Clamp max_touch_num to GOODIX_MAX_CONTACTS, the number of contacts point_data[] is sized for, when reading it from the configuration.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < e825f352ef5271255cd08cc994b0dc25648a2f38 (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 4bfea9c3a0981c1c7fc5d1a1b27197b2de247902 (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 98b2caef249183b572c04451365246f919707845 (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 719d1a2c83a46be6bf81af905e4f6adb3d32dc28 (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 46addbd13dbf4aacb71cfbca964a5e552d0f45ae (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 3b32303460155603d25444274856013d211d5e1f (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 2a67668690129953e898923260a2dd1c7c196495 (git)
Affected: a7ac7c95d4682883d141c5d7a7544d2818f0a09f , < 5ed62a96e06be4e94b8296b7932afee550a70e04 (git)
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Linux Linux Affected: 4.1
Unaffected: 0 , < 4.1 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: goodix - clamp the device-reported contact count\n\ngoodix_ts_read_input_report() copies the number of touch points reported\nby the device into an on-stack buffer\n\n\tu8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];\n\nwhich is sized for at most GOODIX_MAX_CONTACTS (10) contacts. The only\nruntime check bounds the per-interrupt count against ts-\u003emax_touch_num,\nbut that value is taken verbatim from a 4-bit field of the device\nconfiguration block and is never clamped:\n\n\tts-\u003emax_touch_num = ts-\u003econfig[MAX_CONTACTS_LOC] \u0026 0x0f;\n\nThe nibble can be 0..15, so a malfunctioning, malicious or counterfeit\ncontroller (or an attacker tampering with the I2C bus) can advertise up\nto 15 contacts. goodix_ts_read_input_report() then accepts a touch_num\nof up to 15 and the second goodix_i2c_read() writes\nts-\u003econtact_size * (touch_num - 1) bytes past the one-contact header into\npoint_data - up to 30 bytes (45 with the 9-byte report format) beyond the\n92-byte buffer: a stack out-of-bounds write.\n\nClamp max_touch_num to GOODIX_MAX_CONTACTS, the number of contacts\npoint_data[] is sized for, when reading it from the configuration."
          }
        ],
        "id": "CVE-2026-64274",
        "lastModified": "2026-08-17T05:17:26.470",
        "metrics": {
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
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                "baseScore": 7.8,
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                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "source": "nvd@nist.gov",
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        "published": "2026-07-25T10:17:07.797",
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2a67668690129953e898923260a2dd1c7c196495"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3b32303460155603d25444274856013d211d5e1f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/46addbd13dbf4aacb71cfbca964a5e552d0f45ae"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4bfea9c3a0981c1c7fc5d1a1b27197b2de247902"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5ed62a96e06be4e94b8296b7932afee550a70e04"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/719d1a2c83a46be6bf81af905e4f6adb3d32dc28"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/98b2caef249183b572c04451365246f919707845"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e825f352ef5271255cd08cc994b0dc25648a2f38"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-29T17:09:31+00:00",
      "cve": "CVE-2026-64274",
      "id": "CVE-2026-64274",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: goodix - clamp the device-reported contact count",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64274.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-18T00:42:16Z",
      "cve": "CVE-2026-64274",
      "id": "CVE-2026-64274",
      "initial_release_date": "2026-07-25T16:46:49Z",
      "product_status:known_affected": "671",
      "product_status:known_not_affected": "62",
      "product_status:recommended": "111",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64274",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64274.json",
      "version": "11"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.