{"api_version":"1","generated_at":"2026-05-29T22:02:21+00:00","cve":"CVE-2026-46088","urls":{"html":"https://cve.report/CVE-2026-46088","api":"https://cve.report/api/cve/CVE-2026-46088.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46088","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46088"},"summary":{"title":"ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()\n\nsnd_ctl_elem_init_enum_names() advances pointer p through the names\nbuffer while decrementing buf_len. If buf_len reaches zero but items\nremain, the next iteration calls strnlen(p, 0).\n\nWhile strnlen(p, 0) returns 0 and would hit the existing name_len == 0\nerror path, CONFIG_FORTIFY_SOURCE's fortified strnlen() first checks\nmaxlen against __builtin_dynamic_object_size(). When Clang loses track\nof p's object size inside the loop, this triggers a BRK exception panic\nbefore the return value is examined.\n\nAdd a buf_len == 0 guard at the loop entry to prevent calling fortified\nstrnlen() on an exhausted buffer.\n\nFound by kernel fuzz testing through Xiaomi Smartphone.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:30","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/654c818a69c21d2bea4e8fd9eae7da865df9a5c8","name":"https://git.kernel.org/stable/c/654c818a69c21d2bea4e8fd9eae7da865df9a5c8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/82012fd3e78a14360fbc2f1a7491589896704f97","name":"https://git.kernel.org/stable/c/82012fd3e78a14360fbc2f1a7491589896704f97","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0","name":"https://git.kernel.org/stable/c/1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e","name":"https://git.kernel.org/stable/c/8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e0da8a8cac74f4b9f577979d131f0d2b88a84487","name":"https://git.kernel.org/stable/c/e0da8a8cac74f4b9f577979d131f0d2b88a84487","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46088","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46088","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4 1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4 8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4 654c818a69c21d2bea4e8fd9eae7da865df9a5c8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4 82012fd3e78a14360fbc2f1a7491589896704f97 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4 e0da8a8cac74f4b9f577979d131f0d2b88a84487 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46088","cve":"CVE-2026-46088","epss":"0.000180000","percentile":"0.051520000","score_date":"2026-05-28","updated_at":"2026-05-29 00:13:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/core/control.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0","status":"affected","version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","versionType":"git"},{"lessThan":"8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e","status":"affected","version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","versionType":"git"},{"lessThan":"654c818a69c21d2bea4e8fd9eae7da865df9a5c8","status":"affected","version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","versionType":"git"},{"lessThan":"82012fd3e78a14360fbc2f1a7491589896704f97","status":"affected","version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","versionType":"git"},{"lessThan":"e0da8a8cac74f4b9f577979d131f0d2b88a84487","status":"affected","version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/core/control.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.2"},{"lessThan":"3.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"3.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"3.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"3.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"3.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"3.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()\n\nsnd_ctl_elem_init_enum_names() advances pointer p through the names\nbuffer while decrementing buf_len. If buf_len reaches zero but items\nremain, the next iteration calls strnlen(p, 0).\n\nWhile strnlen(p, 0) returns 0 and would hit the existing name_len == 0\nerror path, CONFIG_FORTIFY_SOURCE's fortified strnlen() first checks\nmaxlen against __builtin_dynamic_object_size(). When Clang loses track\nof p's object size inside the loop, this triggers a BRK exception panic\nbefore the return value is examined.\n\nAdd a buf_len == 0 guard at the loop entry to prevent calling fortified\nstrnlen() on an exhausted buffer.\n\nFound by kernel fuzz testing through Xiaomi Smartphone."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:58:31.895Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0"},{"url":"https://git.kernel.org/stable/c/8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e"},{"url":"https://git.kernel.org/stable/c/654c818a69c21d2bea4e8fd9eae7da865df9a5c8"},{"url":"https://git.kernel.org/stable/c/82012fd3e78a14360fbc2f1a7491589896704f97"},{"url":"https://git.kernel.org/stable/c/e0da8a8cac74f4b9f577979d131f0d2b88a84487"}],"title":"ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46088","datePublished":"2026-05-27T12:58:31.895Z","dateReserved":"2026-05-13T15:03:33.096Z","dateUpdated":"2026-05-27T12:58:31.895Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:30","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46088","Ordinal":"1","Title":"ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem","CVE":"CVE-2026-46088","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46088","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()\n\nsnd_ctl_elem_init_enum_names() advances pointer p through the names\nbuffer while decrementing buf_len. If buf_len reaches zero but items\nremain, the next iteration calls strnlen(p, 0).\n\nWhile strnlen(p, 0) returns 0 and would hit the existing name_len == 0\nerror path, CONFIG_FORTIFY_SOURCE's fortified strnlen() first checks\nmaxlen against __builtin_dynamic_object_size(). When Clang loses track\nof p's object size inside the loop, this triggers a BRK exception panic\nbefore the return value is examined.\n\nAdd a buf_len == 0 guard at the loop entry to prevent calling fortified\nstrnlen() on an exhausted buffer.\n\nFound by kernel fuzz testing through Xiaomi Smartphone.","Type":"Description","Title":"ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem"}]}}}