{"id":"CVE-2026-63943","state":"PUBLISHED","title":"Input: xpad - fix out-of-bounds access for Share button","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: xpad - fix out-of-bounds access for Share button\n\nxpadone_process_packet() receives len directly from urb->actual_length\nand uses it to index the share-button byte at data[len - 18] or\ndata[len - 26]. Since both len and data[0] are under the device's\ncontrol, a broken controller can send a GIP_CMD_INPUT packet with\nactual_length < 18 (e.g. 5 bytes) and reach this code path, causing\naccesses beyond the actual array.\n\nFix this by calculating the offset and checking bounds against the\npacket length.","publishedAt":"2026-07-19T14:55:38.411Z","updatedAt":"2026-07-19T14:55:38.411Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cbc82e7db16d59c301457312a624a7de2c03cd4a","status":"affected","lessThan":"bcfb4833cd4078a1a356ef451838b75cd233099e","versionType":"git"},{"version":"302a0cd0bbc450998429a3f4267970a4b93251a8","status":"affected","lessThan":"37ec54abfdd63a63fd50734a9c4e4cbc1e5795af","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"9749db57233b396353ad5dee81eec9d9880c9246","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"6346b0895b574ce45f3747b9c508c72f70e6abef","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"6cdc46b38cf146ce81d4831b6472dbf7731849a2","versionType":"git"},{"version":"a7e3ddd1d9a3d0b26465ed01d464e3c05479ebc8","status":"affected","versionType":"git"},{"version":"6.6.91","status":"affected","lessThan":"6.6.143","versionType":"semver"},{"version":"6.12.29","status":"affected","lessThan":"6.12.93","versionType":"semver"},{"version":"6.14.7","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/joystick/xpad.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/joystick/xpad.c"]}],"references":["https://git.kernel.org/stable/c/bcfb4833cd4078a1a356ef451838b75cd233099e","https://git.kernel.org/stable/c/37ec54abfdd63a63fd50734a9c4e4cbc1e5795af","https://git.kernel.org/stable/c/9749db57233b396353ad5dee81eec9d9880c9246","https://git.kernel.org/stable/c/6346b0895b574ce45f3747b9c508c72f70e6abef","https://git.kernel.org/stable/c/6cdc46b38cf146ce81d4831b6472dbf7731849a2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63943.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63943","state":"PUBLISHED","datePublished":"2026-07-19T14:55:38.411Z","dateUpdated":"2026-07-19T14:55:38.411Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.022Z"},"containers":{"cna":{"title":"Input: xpad - fix out-of-bounds access for Share button","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: xpad - fix out-of-bounds access for Share button\n\nxpadone_process_packet() receives len directly from urb->actual_length\nand uses it to index the share-button byte at data[len - 18] or\ndata[len - 26]. Since both len and data[0] are under the device's\ncontrol, a broken controller can send a GIP_CMD_INPUT packet with\nactual_length < 18 (e.g. 5 bytes) and reach this code path, causing\naccesses beyond the actual array.\n\nFix this by calculating the offset and checking bounds against the\npacket length."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cbc82e7db16d59c301457312a624a7de2c03cd4a","status":"affected","lessThan":"bcfb4833cd4078a1a356ef451838b75cd233099e","versionType":"git"},{"version":"302a0cd0bbc450998429a3f4267970a4b93251a8","status":"affected","lessThan":"37ec54abfdd63a63fd50734a9c4e4cbc1e5795af","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"9749db57233b396353ad5dee81eec9d9880c9246","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"6346b0895b574ce45f3747b9c508c72f70e6abef","versionType":"git"},{"version":"4ef46367073b107ec22f46fe5f12176e87c238e8","status":"affected","lessThan":"6cdc46b38cf146ce81d4831b6472dbf7731849a2","versionType":"git"},{"version":"a7e3ddd1d9a3d0b26465ed01d464e3c05479ebc8","status":"affected","versionType":"git"},{"version":"6.6.91","status":"affected","lessThan":"6.6.143","versionType":"semver"},{"version":"6.12.29","status":"affected","lessThan":"6.12.93","versionType":"semver"},{"version":"6.14.7","status":"affected","lessThan":"6.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/joystick/xpad.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/input/joystick/xpad.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bcfb4833cd4078a1a356ef451838b75cd233099e"},{"url":"https://git.kernel.org/stable/c/37ec54abfdd63a63fd50734a9c4e4cbc1e5795af"},{"url":"https://git.kernel.org/stable/c/9749db57233b396353ad5dee81eec9d9880c9246"},{"url":"https://git.kernel.org/stable/c/6346b0895b574ce45f3747b9c508c72f70e6abef"},{"url":"https://git.kernel.org/stable/c/6cdc46b38cf146ce81d4831b6472dbf7731849a2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T14:55:38.411Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.91","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.29","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.7"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}