{"api_version":"1","generated_at":"2026-08-05T10:52:59+00:00","cve":"CVE-2026-64277","urls":{"html":"https://cve.report/CVE-2026-64277","api":"https://cve.report/api/cve/CVE-2026-64277.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64277","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64277"},"summary":{"title":"Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count","description":"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->gpio_count = buf & 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->keycodemax is set to the full gpio_count\nwhile input->keycode points at the 6-entry allocation.\n\nA device that reports gpio_count > 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's 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:08","updated_at":"2026-07-30 15:00:27"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/8db211aed83733073b0814adaeeab61d4521474e","name":"https://git.kernel.org/stable/c/8db211aed83733073b0814adaeeab61d4521474e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42","name":"https://git.kernel.org/stable/c/64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3480e24bc4e178aaa009edb25b6ee12df199e210","name":"https://git.kernel.org/stable/c/3480e24bc4e178aaa009edb25b6ee12df199e210","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba57f430328534501962d60d651e385ffd7af9ca","name":"https://git.kernel.org/stable/c/ba57f430328534501962d60d651e385ffd7af9ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/502ad7caaa1a445b734c827fa256e5311df67e3d","name":"https://git.kernel.org/stable/c/502ad7caaa1a445b734c827fa256e5311df67e3d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/850117b637bcb1dcc14be0cf09ac819a8707b42c","name":"https://git.kernel.org/stable/c/850117b637bcb1dcc14be0cf09ac819a8707b42c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2","name":"https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/35ed74d32d8260bdfb14a94caf402bf0866bdeec","name":"https://git.kernel.org/stable/c/35ed74d32d8260bdfb14a94caf402bf0866bdeec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64277","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64277","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9e4c596bfd004f447a652205163234dfd4aafa69 502ad7caaa1a445b734c827fa256e5311df67e3d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9e4c596bfd004f447a652205163234dfd4aafa69 3480e24bc4e178aaa009edb25b6ee12df199e210 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9e4c596bfd004f447a652205163234dfd4aafa69 35ed74d32d8260bdfb14a94caf402bf0866bdeec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9e4c596bfd004f447a652205163234dfd4aafa69 ba57f430328534501962d60d651e385ffd7af9ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64277","cve":"CVE-2026-64277","epss":"0.001640000","percentile":"0.060520000","score_date":"2026-08-03","updated_at":"2026-08-04 00:07:35"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/input/rmi4/rmi_f3a.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"502ad7caaa1a445b734c827fa256e5311df67e3d","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"3480e24bc4e178aaa009edb25b6ee12df199e210","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"35ed74d32d8260bdfb14a94caf402bf0866bdeec","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"ba57f430328534501962d60d651e385ffd7af9ca","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"850117b637bcb1dcc14be0cf09ac819a8707b42c","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"8db211aed83733073b0814adaeeab61d4521474e","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"},{"lessThan":"57c10915f2c16c90e0d46ad00876bf39ece40fc2","status":"affected","version":"9e4c596bfd004f447a652205163234dfd4aafa69","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/input/rmi4/rmi_f3a.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.10"},{"lessThan":"5.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"5.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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->gpio_count = buf & 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->keycodemax is set to the full gpio_count\nwhile input->keycode points at the 6-entry allocation.\n\nA device that reports gpio_count > 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's 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."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-27T04:59:21.704Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/502ad7caaa1a445b734c827fa256e5311df67e3d"},{"url":"https://git.kernel.org/stable/c/3480e24bc4e178aaa009edb25b6ee12df199e210"},{"url":"https://git.kernel.org/stable/c/35ed74d32d8260bdfb14a94caf402bf0866bdeec"},{"url":"https://git.kernel.org/stable/c/ba57f430328534501962d60d651e385ffd7af9ca"},{"url":"https://git.kernel.org/stable/c/850117b637bcb1dcc14be0cf09ac819a8707b42c"},{"url":"https://git.kernel.org/stable/c/8db211aed83733073b0814adaeeab61d4521474e"},{"url":"https://git.kernel.org/stable/c/64fb0e1161ccc6b9e48b8df61f07d3c34c01ec42"},{"url":"https://git.kernel.org/stable/c/57c10915f2c16c90e0d46ad00876bf39ece40fc2"}],"title":"Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64277","datePublished":"2026-07-25T08:49:21.936Z","dateReserved":"2026-07-19T15:36:31.776Z","dateUpdated":"2026-07-27T04:59:21.704Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:08","lastModifiedDate":"2026-07-30 15:00:27","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64277","Ordinal":"1","Title":"Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count","CVE":"CVE-2026-64277","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64277","Ordinal":"1","NoteData":"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->gpio_count = buf & 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->keycodemax is set to the full gpio_count\nwhile input->keycode points at the 6-entry allocation.\n\nA device that reports gpio_count > 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's 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.","Type":"Description","Title":"Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count"}]}}}