CVE-2026-4247

When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf. If an attacker is either on path with an established TCP connection, or can themselves...

CVE-2026-4247 TCP: remotely exploitable DoS vector (mbuf leak)

When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf. If an attacker is either on path with an established TCP connection, or can themselves...

FreeBSD-SA-26:09.pf

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:09.pf Security Advisory The FreeBSD Project Topic: pf silently ignores certain rules Category: core Module: pf Announced: 2026-03-25 Credits: Michael Gmelin...

FreeBSD-SA-26:07.nvmf

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:07.nvmf Security Advisory The FreeBSD Project Topic: Remote denial of service via null pointer dereference Category: core Module: nvmf Announced: 2026-03-26...

FreeBSD-SA-26:08.rpcsec_gss

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:08.rpcsecgss Security Advisory The FreeBSD Project Topic: Remote code execution via RPCSECGSS packet validation Category: core Module: rpcsecgss Announced:...

FreeBSD-SA-26:06.tcp

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:06.tcp Security Advisory The FreeBSD Project Topic: TCP: remotely exploitable DoS vector mbuf leak Category: core Module: tcp Announced: 2026-03-26 Credits:...

CVE-2026-4247: Missing Release of Memory after Effective Lifetime

When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf. If an attacker is either on path with an established TCP connection, or can themselves...

FreeBSD 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from the tcprespond function returning and leaking the mbuf when an ACK should not be sent. This vulnerability could allow attackers to exploit the system by...

FreeBSD : Mozilla -- Multiple vulnerabilities (6d445322-2945-11f1-8461-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 6d445322-2945-11f1-8461-b42e991fc52e advisory. CVE-2026-4688: Sandbox escape due to use-after-free in Disability Access APIs. CVE-2026-4695:...

PT-2026-28217

When a challenge ACK is to be sent tcp respond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf. If an attacker is either on path with an established TCP connection, or can themselves...

FreeBSD 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from systems that expose NVMe/TCP targets. When such systems receive CONNECT commands with forged or expired CNTLIDs targeting I/O queues, a kernel crash may occu...

FreeBSD 安全漏洞

FreeBSD is a set of Unix-like operating systems from the FreeBSD Foundation. A buffer overflow vulnerability exists in FreeBSD. The vulnerability stems from the routine to verify packet signatures in the RPCSECGSS implementation of kgssapi.ko not properly verifying data boundaries, which can be...

FreeBSD Security Advisory - FreeBSD-SA-26:08.rpcsec_gss

FreeBSD Security Advisory - Each RPCSECGSS data packet is validated by a routine which checks a signature in the packet. This routine copies a portion of the packet into a stack buffer, but fails to ensure that the buffer is sufficiently large, and a malicious client can trigger a stack overflow...

FreeBSD Security Advisory - FreeBSD-SA-26:07.nvmf

FreeBSD Security Advisory - On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNECT command for an I/O queue with a bogus or stale CNTLID...

FreeBSD Security Advisory - FreeBSD-SA-26:06.tcp

FreeBSD Security Advisory - When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf...

FreeBSD : FreeBSD -- Remote code execution via RPCSEC_GSS packet validation (733febba-28d2-11f1-b35e-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 733febba-28d2-11f1-b35e-bc241121aa0a advisory. Each RPCSECGSS data packet is validated by a routine which checks a signature in the packet. This routi...

FreeBSD : FreeBSD -- TCP: remotely exploitable DoS vector (mbuf leak) (7aa913e9-28d1-11f1-b35e-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7aa913e9-28d1-11f1-b35e-bc241121aa0a advisory. When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the...

FreeBSD : FreeBSD -- Remote denial of service via null pointer dereference (11bf64f0-28d2-11f1-b35e-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 11bf64f0-28d2-11f1-b35e-bc241121aa0a advisory. On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNEC...

FreeBSD : Mozilla -- Multiple vulnerabilities (26c24872-2943-11f1-8461-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 26c24872-2943-11f1-8461-b42e991fc52e advisory. CVE-2026-4729: Memory safety bugs CVE-2026-4728: Spoofing issue in the Privacy: Anti-Tracking...

FreeBSD : Mozilla -- Multiple vulnerabilities (32819a60-2943-11f1-8461-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 32819a60-2943-11f1-8461-b42e991fc52e advisory. CVE-2026-4721: Memory safety bugs. Potential arbitrary code execution. CVE-2026-4709: Incorrec...