{"id":"CVE-2026-101302","state":"PUBLISHED","title":"Remote DoS via receive-side kernel TLS","description":"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 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).","publishedAt":"2026-10-15T06:53:12.242Z","updatedAt":"2026-10-15T13:55:00.760Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"freebsd","products":["FreeBSD FreeBSD"],"affected":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"15.1-RELEASE","status":"affected","lessThan":"p4","versionType":"release"},{"version":"15.0-RELEASE","status":"affected","lessThan":"p14","versionType":"release"},{"version":"14.5-RELEASE","status":"affected","lessThan":"p1","versionType":"release"},{"version":"14.4-RELEASE","status":"affected","lessThan":"p10","versionType":"release"}],"modules":["ktls"]}],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc"],"weaknesses":["CWE-193","CWE-476"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101302.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101302","state":"PUBLISHED","datePublished":"2026-10-15T06:53:12.242Z","dateUpdated":"2026-10-15T13:55:00.760Z","assignerShortName":"freebsd","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateReserved":"2026-09-28T13:33:02.323Z"},"containers":{"cna":{"title":"Remote DoS via receive-side kernel TLS","descriptions":[{"lang":"en","value":"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 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)."}],"affected":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"15.1-RELEASE","status":"affected","lessThan":"p4","versionType":"release"},{"version":"15.0-RELEASE","status":"affected","lessThan":"p14","versionType":"release"},{"version":"14.5-RELEASE","status":"affected","lessThan":"p1","versionType":"release"},{"version":"14.4-RELEASE","status":"affected","lessThan":"p10","versionType":"release"}],"modules":["ktls"]}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-193","description":"CWE-193: Off-by-one Error","lang":"en","type":"CWE"},{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"freebsd","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateUpdated":"2026-10-15T06:53:12.242Z"},"datePublic":"2026-09-29T20:30:00.000Z","credits":[{"lang":"en","type":"finder","value":"Mark Johnston"}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T13:54:51.888489Z","id":"CVE-2026-101302","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T13:55:00.760Z"}}]}}}