{"cve":{"cve_id":"CVE-2026-25068","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00191,"epss_percentile":0.08838,"epss_as_of":"2026-06-23","description":"alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder. The tplg_decode_control_mixer1() function reads the num_channels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array (SND_TPLG_MAX_CHAN). A crafted topology file with an excessive num_channels value can cause out-of-bounds heap writes, leading to a crash.","published_at":"2026-01-29T19:08:03.986000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":4.6,"cvss_v4_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","cvss_v4_severity":"MEDIUM","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-129"],"nvd_references":["https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40","https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflow"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:29:23.615645Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"A","value_label":"Active"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"N","value_label":"None"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"N","value_label":"None"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"alsa-project","vendor_name":"alsa-project","product_slug":"alsa-lib","product_name":"alsa-lib","version_start":"1.2.2","version_start_inclusive":true,"version_end":"1.2.15.2","version_end_inclusive":true,"cpe23_uri":"cve5:alsa-project:alsa-lib:1.2.2:1.2.15.2"},{"vendor_slug":"alsa-project","vendor_name":"alsa-project","product_slug":"alsa-lib","product_name":"alsa-lib","version_start":"5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40","version_start_inclusive":true,"version_end":"5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40","version_end_inclusive":true,"cpe23_uri":"cve5:alsa-project:alsa-lib:5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40:5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40","source_type":"PATCH","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflow","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-01-29T19:08:03.986000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:52:05.081614Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:05.081614Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:05.081614Z","label":"CVSS score revised","source":"cvelistv5"}]}