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 : 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...

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...

CVE-2026-23308

In the Linux kernel, the following vulnerability has been resolved: pinctrl: equilibrium: fix warning trace on load The callback functions 'eqbrirqmask' and 'eqbrirqack' are also called in the callback function 'eqbrirqmaskack'. This is done to avoid source code duplication. The problem, is that ...

CVE-2026-23239

In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcpclose This issue was discovered during a code audit. After cancelworksync is called from espintcpclose, espintcptxwork can still be scheduled from paths such as the Delayed ACK handler or...

CVE-2026-23239 espintcp: Fix race condition in espintcp_close()

In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcpclose This issue was discovered during a code audit. After cancelworksync is called from espintcpclose, espintcptxwork can still be scheduled from paths such as the Delayed ACK handler or...

SUSE CVE-2026-23125

In the Linux kernel, the following vulnerability has been resolved: sctp: move SCTPCMDASSOCSHKEY right after SCTPCMDPEERINIT A null-ptr-deref was reported in the SCTP transmit path when SCTP-AUTH key initialization fails: ================================================================== KASAN:...

Linux Distros Unpatched Vulnerability : CVE-2026-23125

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sctp: move SCTPCMDASSOCSHKEY right after SCTPCMDPEERINIT A null-ptr-deref was reported in the SCTP transmit path when SCTP-AUTH key initialization fails:...

EUVD-2026-5911

In the Linux kernel, the following vulnerability has been resolved: sctp: move SCTPCMDASSOCSHKEY right after SCTPCMDPEERINIT A null-ptr-deref was reported in the SCTP transmit path when SCTP-AUTH key initialization fails: ================================================================== KASAN:...

CVE-2025-15539

Open5GS up to 2.7.6 is affected by a Denial of Service vulnerability in the sgwc component. The issue is in the function sgwc_s11_handle_downlink_data_notification_ack (src/sgwc/s11-handler.c), which can be triggered remotely. The exploit has been publicly disclosed and may be utilized. Red Hat a...

CVE-2025-15539 Open5GS sgwc s11-handler.c sgwc_s11_handle_downlink_data_notification_ack denial of service

A vulnerability was determined in Open5GS up to 2.7.6. Impacted is the function sgwcs11handledownlinkdatanotificationack of the file src/sgwc/s11-handler.c of the component sgwc. This manipulation causes denial of service. The attack can be initiated remotely. The exploit has been publicly...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003058)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003058 advisory. net/ipv4/tcpinput.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hija...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003431)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003431 advisory. net/ipv4/tcpinput.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hija...

CVE-2021-31883

A vulnerability has been identified in Capital Embedded AR Classic 431-422 All versions, Capital Embedded AR Classic R20-11 All versions V2303. When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor options, leading to Denial-of-Service...

CVE-2024-2613

Data was not properly sanitized when decoding a QUIC ACK frame; this could have led to unrestricted memory consumption and a crash. This vulnerability affects Firefox 124...

SUSE CVE-2025-68325

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcake: Fix incorrect qlen reduction in cakedrop In cakedrop, qdisctreereducebacklog is used to update the qlen and backlog of the qdisc hierarchy. Its caller, cakeenqueue, assumes that the parent qdisc will enqueue t...

CVE-2025-68325

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcake: Fix incorrect qlen reduction in cakedrop In cakedrop, qdisctreereducebacklog is used to update the qlen and backlog of the qdisc hierarchy. Its caller, cakeenqueue, assumes that the parent qdisc will enqueue t...

UBUNTU-CVE-2025-68325

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcake: Fix incorrect qlen reduction in cakedrop In cakedrop, qdisctreereducebacklog is used to update the qlen and backlog of the qdisc hierarchy. Its caller, cakeenqueue, assumes that the parent qdisc will enqueue t...

PT-2025-52253

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Linux kernel’s sch cake scheduler related to incorrect queue length qlen reduction within the cake drop function. The problem arises because cake enqueue assumes t...