{"api_version":"1","generated_at":"2026-07-23T21:47:20+00:00","cve":"CVE-2026-63934","urls":{"html":"https://cve.report/CVE-2026-63934","api":"https://cve.report/api/cve/CVE-2026-63934.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63934","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63934"},"summary":{"title":"iio: gyro: itg3200: fix i2c read into the wrong stack location","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: gyro: itg3200: fix i2c read into the wrong stack location\n\nitg3200_read_all_channels() takes `__be16 *buf' as a parameter and\nfills the i2c_msg destination as `(char *)&buf'. Since `buf' is the\nparameter (a pointer), `&buf' is the address of the local pointer\nslot on the stack of itg3200_read_all_channels(), not the address\nof the caller's scan buffer. The (char *) cast hides the type\nmismatch.\n\ni2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16)\n= 8 bytes into the parameter's stack slot, which is discarded when\nthe function returns. The caller's scan buffer in\nitg3200_trigger_handler() is never written to, so\niio_push_to_buffers_with_timestamp() pushes uninitialised stack\ncontents to userspace via /dev/iio:deviceX every scan -- both a\nfunctional bug (no actual gyroscope or temperature data is\ndelivered through the triggered buffer) and an information leak.\n\nThe non-buffered read_raw() path is unaffected: it goes through\nitg3200_read_reg_s16() which uses `&out' on a local s16 value,\nwhere that is correct.\n\nDrop the spurious `&' so the i2c read writes into the caller's\nbuffer.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:11","updated_at":"2026-07-19 16:17:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8654b5e2617819ff4f7c78071dfd0275e971a9b6","name":"https://git.kernel.org/stable/c/8654b5e2617819ff4f7c78071dfd0275e971a9b6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/63203bd072b613c18c237b906b1c9d2dc4527337","name":"https://git.kernel.org/stable/c/63203bd072b613c18c237b906b1c9d2dc4527337","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cfc3283859cfdeacadf80d5e6880bdf871ffeaa6","name":"https://git.kernel.org/stable/c/cfc3283859cfdeacadf80d5e6880bdf871ffeaa6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1","name":"https://git.kernel.org/stable/c/15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/31bbd4b87dd6701fa10e03ba7f6268e49e178d16","name":"https://git.kernel.org/stable/c/31bbd4b87dd6701fa10e03ba7f6268e49e178d16","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b64dd5f3b38911054cbcc570df617e3e8e75e562","name":"https://git.kernel.org/stable/c/b64dd5f3b38911054cbcc570df617e3e8e75e562","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae","name":"https://git.kernel.org/stable/c/6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/90e809376b0f0d1ddec2eec954aecdd2a5b40b0e","name":"https://git.kernel.org/stable/c/90e809376b0f0d1ddec2eec954aecdd2a5b40b0e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63934","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63934","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9dbf091da080508e9f632d307f357beb79a0766b 90e809376b0f0d1ddec2eec954aecdd2a5b40b0e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9dbf091da080508e9f632d307f357beb79a0766b 8654b5e2617819ff4f7c78071dfd0275e971a9b6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9dbf091da080508e9f632d307f357beb79a0766b b64dd5f3b38911054cbcc570df617e3e8e75e562 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9dbf091da080508e9f632d307f357beb79a0766b 31bbd4b87dd6701fa10e03ba7f6268e49e178d16 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63934","cve":"CVE-2026-63934","epss":"0.002100000","percentile":"0.113660000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iio/gyro/itg3200_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"90e809376b0f0d1ddec2eec954aecdd2a5b40b0e","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"8654b5e2617819ff4f7c78071dfd0275e971a9b6","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"b64dd5f3b38911054cbcc570df617e3e8e75e562","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"31bbd4b87dd6701fa10e03ba7f6268e49e178d16","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"63203bd072b613c18c237b906b1c9d2dc4527337","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"cfc3283859cfdeacadf80d5e6880bdf871ffeaa6","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"},{"lessThan":"6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae","status":"affected","version":"9dbf091da080508e9f632d307f357beb79a0766b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iio/gyro/itg3200_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.9"},{"lessThan":"3.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","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":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"3.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"3.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: gyro: itg3200: fix i2c read into the wrong stack location\n\nitg3200_read_all_channels() takes `__be16 *buf' as a parameter and\nfills the i2c_msg destination as `(char *)&buf'. Since `buf' is the\nparameter (a pointer), `&buf' is the address of the local pointer\nslot on the stack of itg3200_read_all_channels(), not the address\nof the caller's scan buffer. The (char *) cast hides the type\nmismatch.\n\ni2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16)\n= 8 bytes into the parameter's stack slot, which is discarded when\nthe function returns. The caller's scan buffer in\nitg3200_trigger_handler() is never written to, so\niio_push_to_buffers_with_timestamp() pushes uninitialised stack\ncontents to userspace via /dev/iio:deviceX every scan -- both a\nfunctional bug (no actual gyroscope or temperature data is\ndelivered through the triggered buffer) and an information leak.\n\nThe non-buffered read_raw() path is unaffected: it goes through\nitg3200_read_reg_s16() which uses `&out' on a local s16 value,\nwhere that is correct.\n\nDrop the spurious `&' so the i2c read writes into the caller's\nbuffer."}],"providerMetadata":{"dateUpdated":"2026-07-19T14:55:32.681Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/90e809376b0f0d1ddec2eec954aecdd2a5b40b0e"},{"url":"https://git.kernel.org/stable/c/8654b5e2617819ff4f7c78071dfd0275e971a9b6"},{"url":"https://git.kernel.org/stable/c/b64dd5f3b38911054cbcc570df617e3e8e75e562"},{"url":"https://git.kernel.org/stable/c/31bbd4b87dd6701fa10e03ba7f6268e49e178d16"},{"url":"https://git.kernel.org/stable/c/63203bd072b613c18c237b906b1c9d2dc4527337"},{"url":"https://git.kernel.org/stable/c/15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1"},{"url":"https://git.kernel.org/stable/c/cfc3283859cfdeacadf80d5e6880bdf871ffeaa6"},{"url":"https://git.kernel.org/stable/c/6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae"}],"title":"iio: gyro: itg3200: fix i2c read into the wrong stack location","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63934","datePublished":"2026-07-19T14:55:32.681Z","dateReserved":"2026-07-19T07:54:57.022Z","dateUpdated":"2026-07-19T14:55:32.681Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:11","lastModifiedDate":"2026-07-19 16:17:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63934","Ordinal":"1","Title":"iio: gyro: itg3200: fix i2c read into the wrong stack location","CVE":"CVE-2026-63934","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63934","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: gyro: itg3200: fix i2c read into the wrong stack location\n\nitg3200_read_all_channels() takes `__be16 *buf' as a parameter and\nfills the i2c_msg destination as `(char *)&buf'. Since `buf' is the\nparameter (a pointer), `&buf' is the address of the local pointer\nslot on the stack of itg3200_read_all_channels(), not the address\nof the caller's scan buffer. The (char *) cast hides the type\nmismatch.\n\ni2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16)\n= 8 bytes into the parameter's stack slot, which is discarded when\nthe function returns. The caller's scan buffer in\nitg3200_trigger_handler() is never written to, so\niio_push_to_buffers_with_timestamp() pushes uninitialised stack\ncontents to userspace via /dev/iio:deviceX every scan -- both a\nfunctional bug (no actual gyroscope or temperature data is\ndelivered through the triggered buffer) and an information leak.\n\nThe non-buffered read_raw() path is unaffected: it goes through\nitg3200_read_reg_s16() which uses `&out' on a local s16 value,\nwhere that is correct.\n\nDrop the spurious `&' so the i2c read writes into the caller's\nbuffer.","Type":"Description","Title":"iio: gyro: itg3200: fix i2c read into the wrong stack location"}]}}}