CVE-2026-101302
mediumTLS 1.3 embeds the actual record type as the last non-zero byte of the decrypted payload, optionally followed by zero padding.
Vendor / product: Freebsd — freebsd
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. A remote TLS 1.3 peer can send a specially crafted record to trigger a kernel panic, resulting in a Denial of Service (DoS).
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-10-15 07:17
Modified: 2026-10-20 00:16
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freebsd / freebsd 14.4, 14.5, 15.0, 15.1
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc
Patch / mitigation: https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc
References
- https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc secteam@freebsd.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗