{"id":"CVE-2026-97929","state":"PUBLISHED","title":"ALSA: usbusx2y: validate URB actual_length in interrupt callback","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usbusx2y: validate URB actual_length in interrupt callback\n\ni_usx2y_in04_int() processes the interrupt URB data without checking\nurb->actual_length.  A short transfer from a malfunctioning device\nwould cause the handler to process uninitialized heap data from the\nkmalloc-allocated in04_buf, which is then copied to the mmap-accessible\nctl_snapshot[] array.\n\nFix by using kzalloc() for in04_buf to zero-initialize the buffer,\nand adding an actual_length check to skip processing on short\ntransfers while still resubmitting the URB.","publishedAt":"2026-09-25T10:22:46.082Z","updatedAt":"2026-10-21T12:53:41.045Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c3576cb77b527f223cf2b9fc2b2e9af5e7adee25","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c156584999bf15118f523ef6c6fedc5b21f46bd9","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"2770321b358658e0a39fe39ccf6a91ee97a81931","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8f5ef203abda9dd36b2af473c7b737d544f807bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/usbusx2y.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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":["sound/usb/usx2y/usbusx2y.c"]}],"references":["https://git.kernel.org/stable/c/c3576cb77b527f223cf2b9fc2b2e9af5e7adee25","https://git.kernel.org/stable/c/c156584999bf15118f523ef6c6fedc5b21f46bd9","https://git.kernel.org/stable/c/b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d","https://git.kernel.org/stable/c/2770321b358658e0a39fe39ccf6a91ee97a81931","https://git.kernel.org/stable/c/8f5ef203abda9dd36b2af473c7b737d544f807bd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97929.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97929","state":"PUBLISHED","datePublished":"2026-09-25T10:22:46.082Z","dateUpdated":"2026-10-21T12:53:41.045Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:18:58.203Z"},"containers":{"cna":{"title":"ALSA: usbusx2y: validate URB actual_length in interrupt callback","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usbusx2y: validate URB actual_length in interrupt callback\n\ni_usx2y_in04_int() processes the interrupt URB data without checking\nurb->actual_length.  A short transfer from a malfunctioning device\nwould cause the handler to process uninitialized heap data from the\nkmalloc-allocated in04_buf, which is then copied to the mmap-accessible\nctl_snapshot[] array.\n\nFix by using kzalloc() for in04_buf to zero-initialize the buffer,\nand adding an actual_length check to skip processing on short\ntransfers while still resubmitting the URB."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c3576cb77b527f223cf2b9fc2b2e9af5e7adee25","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c156584999bf15118f523ef6c6fedc5b21f46bd9","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"2770321b358658e0a39fe39ccf6a91ee97a81931","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8f5ef203abda9dd36b2af473c7b737d544f807bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/usbusx2y.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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":["sound/usb/usx2y/usbusx2y.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c3576cb77b527f223cf2b9fc2b2e9af5e7adee25"},{"url":"https://git.kernel.org/stable/c/c156584999bf15118f523ef6c6fedc5b21f46bd9"},{"url":"https://git.kernel.org/stable/c/b0c30fe6c0d5902bd8a7d1d5720bead5bbe46f7d"},{"url":"https://git.kernel.org/stable/c/2770321b358658e0a39fe39ccf6a91ee97a81931"},{"url":"https://git.kernel.org/stable/c/8f5ef203abda9dd36b2af473c7b737d544f807bd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:53:41.045Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}