CVE-2026-45257

The KTLS receive path decrypted each record in place, assuming that the mbufs holding received data were anonymous and safe to modify. This assumption does not hold for data placed on a socket by sendfile2, which can reference file-backed memory directly through non-anonymous MEXTPG pages or...

CVE-2026-45257

In FreeBSD systems, a vulnerability in the Kernel TLS (KTLS) receive path allows an unprivileged local user to perform an arbitrary file overwrite . The root cause is that the KTLS receive path decrypts records in place, incorrectly assuming mbufs are anonymous. This fails when data is placed on ...

EUVD-2026-39780

The KTLS receive path decrypted each record in place, assuming that the mbufs holding received data were anonymous and safe to modify. This assumption does not hold for data placed on a socket by sendfile2, which can reference file-backed memory directly through non-anonymous MEXTPG pages or...

New DirtyClone Linux Kernel Flaw Lets Local Users Gain Root via Cloned Packets

DirtyClone is a new Linux kernel privilege escalation in the DirtyFrag family. JFrog Security Research published a working exploit walkthrough for the flaw on June 25, the first public demonstration for this variant. Tracked as CVE-2026-43503 CVSS 8.8, it lets a local user corrupt file-backed...

FreeBSD-SA-26:26.ktls

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:26.ktls Security Advisory The FreeBSD Project Topic: Arbitrary file overwrite via the KTLS receive path Category: core Module: ktls Announced: 2026-06-09...

FreeBSD -- Arbitrary file overwrite via the KTLS receive path

Problem Description: The KTLS receive path decrypted each record in place, assuming that the mbufs holding received data were anonymous and safe to modify. This assumption does not hold for data placed on a socket by sendfile2, which can reference file-backed memory directly through non-anonymous...