Vulnerability-Lookup

CVE-2026-64277 (GCVE-0-2026-64277)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count

Summary

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count rmi_f3a_initialize() takes the GPIO count from the device query register (f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT, range 0..127). rmi_f3a_map_gpios() then allocates gpio_key_map with min(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f3a_attention() iterates the full gpio_count and dereferences gpio_key_map[i], and input->keycodemax is set to the full gpio_count while input->keycode points at the 6-entry allocation. A device that reports gpio_count > 6 therefore causes an out-of-bounds read of gpio_key_map[] on every attention interrupt, and out-of-bounds accesses through the input core's default keymap ioctls: EVIOCGKEYCODE reads past the buffer (leaking adjacent slab memory to user space) and EVIOCSKEYCODE writes a caller-controlled value past it, for any process able to open the evdev node, since input_default_getkeycode() and input_default_setkeycode() only bound the index against keycodemax. Size the keymap for the full gpio_count. The mapping loop is unchanged: it still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END) entries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills) and are skipped when reporting.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/502ad7caaa1a445b7…
https://git.kernel.org/stable/c/3480e24bc4e178aaa…
https://git.kernel.org/stable/c/35ed74d32d8260bdf…
https://git.kernel.org/stable/c/ba57f430328534501…
https://git.kernel.org/stable/c/850117b637bcb1dcc…
https://git.kernel.org/stable/c/8db211aed83733073…
https://git.kernel.org/stable/c/64fb0e1161ccc6b9e…
https://git.kernel.org/stable/c/57c10915f2c16c90e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 502ad7caaa1a445b734c827fa256e5311df67e3d (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 3480e24bc4e178aaa009edb25b6ee12df199e210 (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 35ed74d32d8260bdfb14a94caf402bf0866bdeec (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < ba57f430328534501962d60d651e385ffd7af9ca (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 850117b637bcb1dcc14be0cf09ac819a8707b42c (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 8db211aed83733073b0814adaeeab61d4521474e (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42 (git) Affected: 9e4c596bfd004f447a652205163234dfd4aafa69 , < 57c10915f2c16c90e0d46ad00876bf39ece40fc2 (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (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-rc1 , ≤ * (original_commit_for_fix)

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JSON

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{
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          "programFiles": [
            "drivers/input/rmi4/rmi_f3a.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics-rmi4 - bound the F3A keymap to the GPIO count\n\nrmi_f3a_initialize() takes the GPIO count from the device query register\n(f3a-\u003egpio_count = buf \u0026 RMI_F3A_GPIO_COUNT, range 0..127).\nrmi_f3a_map_gpios() then allocates gpio_key_map with\nmin(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but\nrmi_f3a_attention() iterates the full gpio_count and dereferences\ngpio_key_map[i], and input-\u003ekeycodemax is set to the full gpio_count\nwhile input-\u003ekeycode points at the 6-entry allocation.\n\nA device that reports gpio_count \u003e 6 therefore causes an out-of-bounds\nread of gpio_key_map[] on every attention interrupt, and out-of-bounds\naccesses through the input core\u0027s default keymap ioctls: EVIOCGKEYCODE\nreads past the buffer (leaking adjacent slab memory to user space) and\nEVIOCSKEYCODE writes a caller-controlled value past it, for any process\nable to open the evdev node, since input_default_getkeycode() and\ninput_default_setkeycode() only bound the index against keycodemax.\n\nSize the keymap for the full gpio_count. The mapping loop is unchanged:\nit still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END)\nentries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills)\nand are skipped when reporting."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:49:21.936Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2"
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      ],
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    "cveId": "CVE-2026-64277",
    "datePublished": "2026-07-25T08:49:21.936Z",
    "dateReserved": "2026-07-19T15:36:31.776Z",
    "dateUpdated": "2026-07-25T08:49:21.936Z",
    "state": "PUBLISHED"
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      "date": "2026-07-26",
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The mapping loop is unchanged:\\nit still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END)\\nentries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills)\\nand are skipped when reporting.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/input/rmi4/rmi_f3a.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"502ad7caaa1a445b734c827fa256e5311df67e3d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"3480e24bc4e178aaa009edb25b6ee12df199e210\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"35ed74d32d8260bdfb14a94caf402bf0866bdeec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"ba57f430328534501962d60d651e385ffd7af9ca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"850117b637bcb1dcc14be0cf09ac819a8707b42c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"8db211aed83733073b0814adaeeab61d4521474e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9e4c596bfd004f447a652205163234dfd4aafa69\",\"lessThan\":\"57c10915f2c16c90e0d46ad00876bf39ece40fc2\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/input/rmi4/rmi_f3a.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3480e24bc4e178aaa009edb25b6ee12df199e210\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/35ed74d32d8260bdfb14a94caf402bf0866bdeec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/502ad7caaa1a445b734c827fa256e5311df67e3d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/850117b637bcb1dcc14be0cf09ac819a8707b42c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8db211aed83733073b0814adaeeab61d4521474e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ba57f430328534501962d60d651e385ffd7af9ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:46:45Z",
      "cve": "CVE-2026-64277",
      "id": "CVE-2026-64277",
      "initial_release_date": "2026-07-25T16:46:45Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64277",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64277.json",
      "version": "2"
    }
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}

GHSA-P39G-X9XH-7WQ9

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count

rmi_f3a_initialize() takes the GPIO count from the device query register (f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT, range 0..127). rmi_f3a_map_gpios() then allocates gpio_key_map with min(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f3a_attention() iterates the full gpio_count and dereferences gpio_key_map[i], and input->keycodemax is set to the full gpio_count while input->keycode points at the 6-entry allocation.

A device that reports gpio_count > 6 therefore causes an out-of-bounds read of gpio_key_map[] on every attention interrupt, and out-of-bounds accesses through the input core's default keymap ioctls: EVIOCGKEYCODE reads past the buffer (leaking adjacent slab memory to user space) and EVIOCSKEYCODE writes a caller-controlled value past it, for any process able to open the evdev node, since input_default_getkeycode() and input_default_setkeycode() only bound the index against keycodemax.

Size the keymap for the full gpio_count. The mapping loop is unchanged: it still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END) entries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills) and are skipped when reporting.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64277"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics-rmi4 - bound the F3A keymap to the GPIO count\n\nrmi_f3a_initialize() takes the GPIO count from the device query register\n(f3a-\u003egpio_count = buf \u0026 RMI_F3A_GPIO_COUNT, range 0..127).\nrmi_f3a_map_gpios() then allocates gpio_key_map with\nmin(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but\nrmi_f3a_attention() iterates the full gpio_count and dereferences\ngpio_key_map[i], and input-\u003ekeycodemax is set to the full gpio_count\nwhile input-\u003ekeycode points at the 6-entry allocation.\n\nA device that reports gpio_count \u003e 6 therefore causes an out-of-bounds\nread of gpio_key_map[] on every attention interrupt, and out-of-bounds\naccesses through the input core\u0027s default keymap ioctls: EVIOCGKEYCODE\nreads past the buffer (leaking adjacent slab memory to user space) and\nEVIOCSKEYCODE writes a caller-controlled value past it, for any process\nable to open the evdev node, since input_default_getkeycode() and\ninput_default_setkeycode() only bound the index against keycodemax.\n\nSize the keymap for the full gpio_count. The mapping loop is unchanged:\nit still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END)\nentries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills)\nand are skipped when reporting.",
  "id": "GHSA-p39g-x9xh-7wq9",
  "modified": "2026-07-25T12:31:28Z",
  "published": "2026-07-25T12:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64277"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3480e24bc4e178aaa009edb25b6ee12df199e210"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35ed74d32d8260bdfb14a94caf402bf0866bdeec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/502ad7caaa1a445b734c827fa256e5311df67e3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/850117b637bcb1dcc14be0cf09ac819a8707b42c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8db211aed83733073b0814adaeeab61d4521474e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba57f430328534501962d60d651e385ffd7af9ca"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-64277 (GCVE-0-2026-64277)

GHSA-P39G-X9XH-7WQ9

Tags

Sightings

Nomenclature