{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46088","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.096Z","datePublished":"2026-05-27T12:58:31.895Z","dateUpdated":"2026-06-14T17:53:28.015Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T17:53:28.015Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/control.c"],"versions":[{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"708f6ec9bcdf58bfd561409110baaf4fd3be4ea3","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"bfcbb4994da9e979c4bcfcf24aaaac69e457e48e","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"a470f7cabc4df72d9bd132f5719a8717292bb440","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"654c818a69c21d2bea4e8fd9eae7da865df9a5c8","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"82012fd3e78a14360fbc2f1a7491589896704f97","status":"affected","versionType":"git"},{"version":"8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4","lessThan":"e0da8a8cac74f4b9f577979d131f0d2b88a84487","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/control.c"],"versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.86","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.27","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/708f6ec9bcdf58bfd561409110baaf4fd3be4ea3"},{"url":"https://git.kernel.org/stable/c/bfcbb4994da9e979c4bcfcf24aaaac69e457e48e"},{"url":"https://git.kernel.org/stable/c/a470f7cabc4df72d9bd132f5719a8717292bb440"},{"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"}}}}