{"id":"CVE-2026-101302","title":"TLS 1.3 embeds the actual record type as the last non-zero byte of the decrypted payload, optionally followed by zero padding","summary":"TLS 1.3 embeds the actual record type as the last non-zero byte of the decrypted payload, optionally followed by zero padding.  The code which searches for the inner record type had an off-by-one bug which could be triggered by an invali…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-193","CWE-476"],"vendor":"FreeBSD","product":"FreeBSD","affected":["FreeBSD >= 15.1-RELEASE < p4","FreeBSD >= 15.0-RELEASE < p14","FreeBSD >= 14.5-RELEASE < p1","FreeBSD >= 14.4-RELEASE < p10"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:17:41.437","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101302","references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc","label":"secteam@freebsd.org"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T13:54:51.888489Z"},"ingestedAt":"2026-10-15T07:57:27.842Z","epss":0.0024,"epssPercentile":0.15009,"slug":"CVE-2026-101302","body":"## Overview\n\nTLS 1.3 embeds the actual record type as the last non-zero byte of the decrypted payload, optionally followed by zero padding.  The code which searches for the inner record type had an off-by-one bug which could be triggered by an invalid frame, leading to an underflow followed by an unconditional NULL pointer dereference, causing a kernel panic.\n\nA remote TLS 1.3 peer can send a specially crafted record to trigger a kernel panic, resulting in a Denial of Service (DoS).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":222351,"id":"CVE-2026-101302","ts":1792073297995,"field":"cvss","old":null,"new":"6.5"},{"seq":222350,"id":"CVE-2026-101302","ts":1792073297995,"field":"severity","old":"none","new":"medium"}]}