{"id":"CVE-2026-101310","title":"The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream","summary":"The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream.  A zero-length entry caused an out-of-bounds read or write during DMA transfer processing.  BDL fields were also subjec…","severity":"none","cwe":["CWE-126","CWE-362","CWE-787"],"vendor":"FreeBSD","product":"FreeBSD","affected":["FreeBSD >= 15.1-RELEASE < p5","FreeBSD >= 14.5-RELEASE < p2","FreeBSD >= 14.4-RELEASE < p11"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T08:16:36.313","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101310","references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:72.bhyve.asc","label":"secteam@freebsd.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-15T07:57:27.858Z","slug":"CVE-2026-101310","body":"## Overview\n\nThe HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream.  A zero-length entry caused an out-of-bounds read or write during DMA transfer processing.  BDL fields were also subject to modification by the guest after validation.\n\nA malicious guest can crash the bhyve process or potentially execute arbitrary code in the host userspace context running the virtual machine, subject to bhyve's Capsicum sandbox.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}