{"id":"CVE-2026-64134","revision":"7ade3fff58b5480cb0876e3268a08805","records":[{"revision":"7ade3fff58b5480cb0876e3268a08805","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64134","aliases":[],"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":0,"publishedAt":"2026-07-19T15:40:28.974+00:00","modifiedAt":"2026-10-19T20:28:13.823+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_lib.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"cf393babb37a1679a1ec1d864df1090353465e23\",\n                            \"lessThan\": \"41a766c647294842c9b17672449f8e011048cba9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf393babb37a1679a1ec1d864df1090353465e23\",\n                            \"lessThan\": \"ce836587e594af39ff048d9b29dee0f5f10692c9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf393babb37a1679a1ec1d864df1090353465e23\",\n                            \"lessThan\": \"feff0251386aa6bb180a0a1cf7c1f91ba868113d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf393babb37a1679a1ec1d864df1090353465e23\",\n                            \"lessThan\": \"c9f6768515818d71bdfc20119a81f3332c53b9c6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf393babb37a1679a1ec1d864df1090353465e23\",\n                            \"lessThan\": \"e4d3386b74fba8e01280484b67ee481ece00201e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_lib.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.142\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.92\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.34\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.11\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9","https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9","https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d","https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6","https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64134","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64134","identifiers":["CVE-2026-64134"]},"retained":false,"historicalAffected":[]}],"coverage":[]}