{"id":"CVE-2026-80772","state":"PUBLISHED","title":"HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()\n\njoycon_ctlr_read_handler() casts an incoming HID input report to\nstruct joycon_input_report and parses it, guarding the cast only with a\n12-byte length check:\n\n\tif (size >= 12) /* make sure it contains the input report */\n\t\tjoycon_parse_report(ctlr, (struct joycon_input_report *)data);\n\nstruct joycon_input_report is 49 bytes: a 13-byte header followed by a\nunion whose IMU arm is 36 bytes. For an IMU report joycon_parse_report()\n-> joycon_parse_imu_report() walks that union (struct offsets 13..48),\nso a report of exactly 12 bytes with data[0] == JC_INPUT_IMU_DATA passes\nthe guard yet is read up to 37 bytes past its declared length. The\nover-read bytes are decoded into accelerometer/gyroscope values and\nforwarded to userspace through the \"(IMU)\" input device, leaking\ndriver-internal memory. data[0] and size are fully controlled by a\nmalicious or spoofed Joy-Con/Pro Controller.\n\nReceive buffers are sized to the maximum report length, so this is an\nover-read within the allocation rather than a slab OOB, but the decoded\nbytes still reach userspace.\n\nThe sibling subcmd path in joycon_ctlr_handle_event() already bounds the\nsame cast correctly:\n\n\tif (size < sizeof(struct joycon_input_report) ||\n\t    data[0] != JC_INPUT_SUBCMD_REPLY)\n\t\tbreak;\n\nUse the same sizeof(struct joycon_input_report) bound here.","publishedAt":"2026-09-04T15:12:44.445Z","updatedAt":"2026-10-19T08:43:28.729Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"33ea29f8b6141f2d265de807e110a6435b355cb0","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"bd397c4123a4bc084913d8c7fdb40ef94e9f8172","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"addca61f9a23c0d20a387c2040e70479f54518e1","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"51cfd1adbe7a46bb08af162abb3ab3b6820e2d15","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"d4cabd4089adb59cf7974915737c52cc47a9bb1b","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"34725ed4719da424113db8449fb5485aaf71a913","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"27b376b945c0aac46fcdfcc950b14a85b874b557","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-nintendo.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-nintendo.c"]}],"references":["https://git.kernel.org/stable/c/33ea29f8b6141f2d265de807e110a6435b355cb0","https://git.kernel.org/stable/c/bd397c4123a4bc084913d8c7fdb40ef94e9f8172","https://git.kernel.org/stable/c/addca61f9a23c0d20a387c2040e70479f54518e1","https://git.kernel.org/stable/c/51cfd1adbe7a46bb08af162abb3ab3b6820e2d15","https://git.kernel.org/stable/c/d4cabd4089adb59cf7974915737c52cc47a9bb1b","https://git.kernel.org/stable/c/34725ed4719da424113db8449fb5485aaf71a913","https://git.kernel.org/stable/c/27b376b945c0aac46fcdfcc950b14a85b874b557"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80772.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80772","state":"PUBLISHED","datePublished":"2026-09-04T15:12:44.445Z","dateUpdated":"2026-10-19T08:43:28.729Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.792Z"},"containers":{"cna":{"title":"HID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: nintendo: fix out-of-bounds read in joycon_ctlr_read_handler()\n\njoycon_ctlr_read_handler() casts an incoming HID input report to\nstruct joycon_input_report and parses it, guarding the cast only with a\n12-byte length check:\n\n\tif (size >= 12) /* make sure it contains the input report */\n\t\tjoycon_parse_report(ctlr, (struct joycon_input_report *)data);\n\nstruct joycon_input_report is 49 bytes: a 13-byte header followed by a\nunion whose IMU arm is 36 bytes. For an IMU report joycon_parse_report()\n-> joycon_parse_imu_report() walks that union (struct offsets 13..48),\nso a report of exactly 12 bytes with data[0] == JC_INPUT_IMU_DATA passes\nthe guard yet is read up to 37 bytes past its declared length. The\nover-read bytes are decoded into accelerometer/gyroscope values and\nforwarded to userspace through the \"(IMU)\" input device, leaking\ndriver-internal memory. data[0] and size are fully controlled by a\nmalicious or spoofed Joy-Con/Pro Controller.\n\nReceive buffers are sized to the maximum report length, so this is an\nover-read within the allocation rather than a slab OOB, but the decoded\nbytes still reach userspace.\n\nThe sibling subcmd path in joycon_ctlr_handle_event() already bounds the\nsame cast correctly:\n\n\tif (size < sizeof(struct joycon_input_report) ||\n\t    data[0] != JC_INPUT_SUBCMD_REPLY)\n\t\tbreak;\n\nUse the same sizeof(struct joycon_input_report) bound here."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"33ea29f8b6141f2d265de807e110a6435b355cb0","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"bd397c4123a4bc084913d8c7fdb40ef94e9f8172","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"addca61f9a23c0d20a387c2040e70479f54518e1","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"51cfd1adbe7a46bb08af162abb3ab3b6820e2d15","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"d4cabd4089adb59cf7974915737c52cc47a9bb1b","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"34725ed4719da424113db8449fb5485aaf71a913","versionType":"git"},{"version":"2af16c1f846bd60240745bbd3afa13d5f040c61a","status":"affected","lessThan":"27b376b945c0aac46fcdfcc950b14a85b874b557","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-nintendo.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-nintendo.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/33ea29f8b6141f2d265de807e110a6435b355cb0"},{"url":"https://git.kernel.org/stable/c/bd397c4123a4bc084913d8c7fdb40ef94e9f8172"},{"url":"https://git.kernel.org/stable/c/addca61f9a23c0d20a387c2040e70479f54518e1"},{"url":"https://git.kernel.org/stable/c/51cfd1adbe7a46bb08af162abb3ab3b6820e2d15"},{"url":"https://git.kernel.org/stable/c/d4cabd4089adb59cf7974915737c52cc47a9bb1b"},{"url":"https://git.kernel.org/stable/c/34725ed4719da424113db8449fb5485aaf71a913"},{"url":"https://git.kernel.org/stable/c/27b376b945c0aac46fcdfcc950b14a85b874b557"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:43:28.729Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.6.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.2.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}