{"id":"CVE-2026-23076","summary":"ALSA: ctxfi: Fix potential OOB access in audio mixer handling","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Fix potential OOB access in audio mixer handling\n\nIn the audio mixer handling code of ctxfi driver, the conf field is\nused as a kind of loop index, and it's referred in the index callbacks\n(amixer_index() and sum_index()).\n\nAs spotted recently by fuzzers, the current code causes OOB access at\nthose functions.\n| UBSAN: array-index-out-of-bounds in /build/reproducible-path/linux-6.17.8/sound/pci/ctxfi/ctamixer.c:347:48\n| index 8 is out of range for type 'unsigned char [8]'\n\nAfter the analysis, the cause was found to be the lack of the proper\n(re-)initialization of conj field.\n\nThis patch addresses those OOB accesses by adding the proper\ninitializations of the loop indices.","modified":"2026-04-02T17:30:11.956160Z","published":"2026-02-04T16:08:01.204Z","related":["SUSE-SU-2026:0962-1","SUSE-SU-2026:1081-1","SUSE-SU-2026:20667-1","SUSE-SU-2026:20720-1","SUSE-SU-2026:20838-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1","SUSE-SU-2026:20931-1","openSUSE-SU-2026:20416-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23076.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38"},{"type":"WEB","url":"https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23076.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23076"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8cc72361481f00253f1e468ade5795427386d593"},{"fixed":"6524205326e0c1a21263b5c14e48e14ef7e449ae"},{"fixed":"afca7ff5d5d4d63a1acb95461f55ca9a729feedf"},{"fixed":"8c1d09806e1441bc6a54b9a4f2818918046d5174"},{"fixed":"a8c42d11b0526a89192bd2f79facb4c60c8a1f38"},{"fixed":"d77ba72558cd66704f0fb7e0969f697e87c0f71c"},{"fixed":"873e2360d247eeee642878fcc3398babff7e387c"},{"fixed":"61006c540cbdedea83b05577dc7fb7fa18fe1276"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23076.json"}}],"schema_version":"1.7.5"}