CVE-2026-101302 — Remote DoS via receive-side kernel TLS

Description (CNA)

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).

Affected (CNA)

Vendor / product	Versions
FreeBSD / FreeBSD	affected 15.1-RELEASE before p4; affected 15.0-RELEASE before p14; affected 14.5-RELEASE before p1; affected 14.4-RELEASE before p10

CWE

CWE-193, CWE-476

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:67.ktls.asc

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.