{"api_version":"1","generated_at":"2026-07-20T14:42:27+00:00","cve":"CVE-2026-64134","urls":{"html":"https://cve.report/CVE-2026-64134","api":"https://cve.report/api/cve/CVE-2026-64134.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64134","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64134"},"summary":{"title":"ALSA: pcm: Don't setup bogus iov_iter for silencing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: Don't setup bogus iov_iter for silencing\n\nAt transition to the iov_iter for PCM data transfer, we blindly\napplied the iov_iter setup also for silencing (i.e. data = NULL), and\nit leads to a calculation of bogus iov_iter.  Fortunately this didn't\ncause troubles on most of architectures but it goes wrong on RISC-V\nnow, causing a NULL dereference.\n\nHandle the NULL data case to treat the silencing in interleaved_copy()\nfor addressing the bug above.  noninterleaved_copy() has already the\nNULL data handling, so it doesn't need changes.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:55","updated_at":"2026-07-19 16:17:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6","name":"https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e","name":"https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9","name":"https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9","name":"https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d","name":"https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64134","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64134","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf393babb37a1679a1ec1d864df1090353465e23 41a766c647294842c9b17672449f8e011048cba9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf393babb37a1679a1ec1d864df1090353465e23 ce836587e594af39ff048d9b29dee0f5f10692c9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf393babb37a1679a1ec1d864df1090353465e23 feff0251386aa6bb180a0a1cf7c1f91ba868113d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf393babb37a1679a1ec1d864df1090353465e23 c9f6768515818d71bdfc20119a81f3332c53b9c6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf393babb37a1679a1ec1d864df1090353465e23 e4d3386b74fba8e01280484b67ee481ece00201e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/core/pcm_lib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"41a766c647294842c9b17672449f8e011048cba9","status":"affected","version":"cf393babb37a1679a1ec1d864df1090353465e23","versionType":"git"},{"lessThan":"ce836587e594af39ff048d9b29dee0f5f10692c9","status":"affected","version":"cf393babb37a1679a1ec1d864df1090353465e23","versionType":"git"},{"lessThan":"feff0251386aa6bb180a0a1cf7c1f91ba868113d","status":"affected","version":"cf393babb37a1679a1ec1d864df1090353465e23","versionType":"git"},{"lessThan":"c9f6768515818d71bdfc20119a81f3332c53b9c6","status":"affected","version":"cf393babb37a1679a1ec1d864df1090353465e23","versionType":"git"},{"lessThan":"e4d3386b74fba8e01280484b67ee481ece00201e","status":"affected","version":"cf393babb37a1679a1ec1d864df1090353465e23","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/core/pcm_lib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","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":"6.6.142","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: Don't setup bogus iov_iter for silencing\n\nAt transition to the iov_iter for PCM data transfer, we blindly\napplied the iov_iter setup also for silencing (i.e. data = NULL), and\nit leads to a calculation of bogus iov_iter.  Fortunately this didn't\ncause troubles on most of architectures but it goes wrong on RISC-V\nnow, causing a NULL dereference.\n\nHandle the NULL data case to treat the silencing in interleaved_copy()\nfor addressing the bug above.  noninterleaved_copy() has already the\nNULL data handling, so it doesn't need changes."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:28.974Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9"},{"url":"https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9"},{"url":"https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d"},{"url":"https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6"},{"url":"https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e"}],"title":"ALSA: pcm: Don't setup bogus iov_iter for silencing","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64134","datePublished":"2026-07-19T15:40:28.974Z","dateReserved":"2026-07-19T07:54:57.036Z","dateUpdated":"2026-07-19T15:40:28.974Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:55","lastModifiedDate":"2026-07-19 16:17:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64134","Ordinal":"1","Title":"ALSA: pcm: Don't setup bogus iov_iter for silencing","CVE":"CVE-2026-64134","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64134","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: Don't setup bogus iov_iter for silencing\n\nAt transition to the iov_iter for PCM data transfer, we blindly\napplied the iov_iter setup also for silencing (i.e. data = NULL), and\nit leads to a calculation of bogus iov_iter.  Fortunately this didn't\ncause troubles on most of architectures but it goes wrong on RISC-V\nnow, causing a NULL dereference.\n\nHandle the NULL data case to treat the silencing in interleaved_copy()\nfor addressing the bug above.  noninterleaved_copy() has already the\nNULL data handling, so it doesn't need changes.","Type":"Description","Title":"ALSA: pcm: Don't setup bogus iov_iter for silencing"}]}}}