{"cve":"CVE-2025-68783","nvd":{"published":"2026-01-13T16:15:58.000","modified":"2026-06-17T09:59:34.920","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-mixer: us16x08: validate meter packet indices\n\nget_meter_levels_from_urb() parses the 64-byte meter packets sent by\nthe device and fills the per-channel arrays meter_level[],\ncomp_level[] and master_level[] in struct snd_us16x08_meter_store.\n\nCurrently the function derives the channel index directly from the\nmeter packet (MUB2(meter_urb, s) - 1) and uses it to index those\narrays without validating the range. If the packet contains a\nnegative or out-of-range channel number, the driver may write past\nthe end of these arrays.\n\nIntroduce a local channel variable and validate it before updating the\narrays. We reject negative indices, limit meter_level[] and\ncomp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[]\nupdates with ARRAY_SIZE(master_level).","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/2168866396bd28ec4f3c8da0fbc7d08b5bd4f053","https://git.kernel.org/stable/c/2f21a7cbaaa93926f5be15bc095b9c57c35748d9","https://git.kernel.org/stable/c/53461710a95e15ac1f6542450943a492ecf8e550","https://git.kernel.org/stable/c/5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e","https://git.kernel.org/stable/c/a8ad320efb663be30b794e3dd3e829301c0d0ed3"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2025-68783","score":0.00207,"percentile":0.10791,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}