{"id":"CVE-2026-90781","summary":"alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse()","details":"alsa-lib through 1.2.16.1 contains a stack buffer overflow in the __snd_ctl_ascii_elem_id_parse() function that writes one byte past a 64-byte buffer when parsing a name= field with 64 or more characters. Attackers can supply a long control-element identifier string through saved state files or command-line arguments to overwrite adjacent stack memory and crash the calling process.","modified":"2026-09-15T08:11:01.878583Z","published":"2026-09-13T12:22:01.184Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-193"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90781.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90781.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90781"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-off-by-one-stack-buffer-overflow-in-snd-ctl-ascii-elem-id-parse"},{"type":"FIX","url":"https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c091d27020"},{"type":"PACKAGE","url":"https://github.com/alsa-project/alsa-lib"},{"type":"ARTICLE","url":"https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/control/ctlparse.c#L216-L241"},{"type":"ARTICLE","url":"https://lore.kernel.org/alsa-devel/CACBQ=P2FhO3M6dkv3cWuKb6Qhs92ouV+FJ3SJZ_PVBSSdJWRAQ@mail.gmail.com/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/alsa-project/alsa-lib","events":[{"introduced":"0"},{"fixed":"a7babcb8e6361719bf18fa96f11354d125447500"},{"fixed":"f84cd4ced7b36fddb8e4ee24404cf7c091d27020"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.2.16.1"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["v1.2.16.1","v1.2.16","v1.2.15.3","v1.2.15.2","v1.2.15.1","v1.2.15","v1.2.14","v1.2.13","v1.2.12","v1.2.11","v1.2.10","v1.2.9","v1.2.8","v1.2.7.2","v1.2.7.1","v1.2.7","v1.2.6.1","v1.2.6","v1.2.5","v1.2.4","v1.2.3.2","v1.2.3.1","v1.2.3","v1.2.2","v1.2.1.2","v1.2.1.1","v1.2.1","v1.1.9","v1.1.8","v1.1.7","v1.1.6","v1.1.5","v1.1.4.1","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.29","v1.0.28","v1.0.27.2","v1.0.27.1","v1.0.27","v1.0.26","v1.0.25","v1.0.24.1","v1.0.24","v1.0.23","v1.0.22","v1.0.21a","v1.0.21","v1.0.20","v1.0.19","v1.0.18","v1.0.18rc3","v1.0.17a","v1.0.17","v1.0.17rc2","v1.0.17rc1","v1.0.16","v1.0.16rc2","v1.0.16rc1","v1.0.15","v1.0.15rc3","v1.0.15rc2","v1.0.15rc1","v1.0.14a","v1.0.14","v1.0.14rc4","v1.0.14rc3","v1.0.14rc2","v1.0.14rc1","v1.0.13","v1.0.13rc3","v1.0.13rc2","v1.0.13rc1","v1.0.12","v1.0.12rc2","v1.0.12rc1","v1.0.11","v1.0.11rc5","v1.0.11rc4","v1.0.11rc3","v1.0.11rc2","v1.0.11rc1","v1.0.10","v1.0.10rc3","v1.0.10rc2","v1.0.10rc1","v1.0.9","v1.0.9rc4","v1.0.9rc3","v1.0.9rc2","v1.0.9rc1","v1.0.8","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90781.json","vanir_signatures_modified":"2026-09-15T08:11:01Z","vanir_signatures":[{"target":{"file":"src/control/ctlparse.c","function":"__snd_ctl_ascii_elem_id_parse"},"deprecated":false,"digest":{"function_hash":"292882466361100373931368979393031581670","length":2646},"id":"CVE-2026-90781-155f5ded","signature_type":"Function","signature_version":"v1","source":"https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c091d27020"},{"target":{"file":"src/control/ctlparse.c"},"deprecated":false,"digest":{"line_hashes":["326929841161789934085150034515576501591","267747721409598369006592612674345384500","301856141397060108673662845160169341044","306380434517575392323718783662267879378","250296632222991606297011836125014894552","265697461092583707450594198292581353686","305573830248761764787914249718944588198","306380434517575392323718783662267879378"],"threshold":0.9},"id":"CVE-2026-90781-b5feb41a","signature_type":"Line","signature_version":"v1","source":"https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c091d27020"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}]}