Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: Fallback earlier on simultaneous connections Syzkaller reports a race condition in simultaneous connections that leads to inconsistent fallback behavior. WARNING: CPU: 3 PID: 33 at net/mptcp/subflow.c:1515...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialize rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported a divide-by-zero issue in tcpselectWindow for MPTCP sockets. 0 We had a similar issue with bare TCP and fixed it in commit 499350a5a6...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb: Server: Fixed a leak of activenumconn in ksmbdtcpnewconnection. When ksmbdtcpnewconnection fails due to a kthreadrun failure, the transport is freed using freetransport, which does not decrement activenumconn, resulting in a...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Net: Consume xmit errors of GSO frames. udpgrofrglist.sh and udpgrobench.sh are the most flaky tests currently in NIPA. They fail in exactly the same way. The TCP GRO test occasionally stalls, and the test terminates after 10...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: nvme-tcp: A NULL pointer dereference was fixed in the nvmettcpbuildpduiovec function. The commit efa56305908b “nvmet-tcp: Fixed a kernel panic when the host sends an invalid H2C PDU length” added bounds checking for the ttag...

postgresql: PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation

A flaw was found in PostgreSQL. Uncontrolled recursion during SSL Secure Sockets Layer and GSS Generic Security Service negotiation allows an attacker to achieve a sustained denial of service. This can be exploited by an attacker with access to a PostgreSQL AFUNIX socket. If SSL and GSS are both...

PT-2026-69518

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the tcp check req function within the SYN-RECEIVED request-socket path. The system accepts an in-window RST Reset packet without requiring the SEG.SEQ variable to...

PT-2026-69519

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the construction of standalone TCP responses using TCP-AO TCP Authentication Option options. The functions tcp v4 send ack and tcp v6 send response create responses...

New NatJack Attacks Hijack TCP Sessions and Spoof DNS by Manipulating NAT Tables

Security researcher Malcolm Stagg has disclosed a new attack class called NatJack that manipulates network address translation NAT connection state to hijack active TCP sessions, spoof DNS responses, expose mapped ports, and exhaust NAT tables. Presented at Black Hat USA 2026, the research found...

nvmet-tcp: Fix potential UAF when ddgst mismatch

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nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path

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SUSE SLES15: rsyslog / rsyslog-module-gssapi / rsyslog-module-gtls / etc (SUSE-SU-2026:3518-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:3518-1 advisory. - CVE-2026-61548: crafted RFC 5424 messages to mmpstrucdata can lead to a stack overwrite bsc1272414. - input sequence during oversize-frame...

CVE-2026-5857

The CVE-2026-5857 entry documents a bug in Contiki-NG’s MQTT client, where parse_publish_vhdr() sets topic_len_received=1 before validating topic_len against the 64-byte limit. On the next TCP segment, a persisted flag causes the parser to bypass the guard and perform a memcpy() using an unvalida...

CVE-2026-5857 Contiki-NG MQTT Client Out-of-Bounds Write in PUBLISH Topic Parser via Persistent State Between TCP Segments

Contiki-NG's MQTT client parsepublishvhdr in os/net/app-layer/mqtt/mqtt.c sets topiclenreceived=1 before checking topiclen against the 64-byte limit, so an over-length topic returns early but leaves the flag set. On the next TCP segment, tcpinput re-invokes the parser with topicreceived==0, and t...

CVE-2026-5857 Contiki-NG MQTT Client Out-of-Bounds Write in PUBLISH Topic Parser via Persistent State Between TCP Segments

Contiki-NG's MQTT client parsepublishvhdr in os/net/app-layer/mqtt/mqtt.c sets topiclenreceived=1 before checking topiclen against the 64-byte limit, so an over-length topic returns early but leaves the flag set. On the next TCP segment, tcpinput re-invokes the parser with topicreceived==0, and t...

SUSE CVE-2026-64575

In the Linux kernel, the following vulnerability has been resolved: bpf: tcp: fix double sock release on batch realloc bpfitertcpbatch releases the current batch via bpfitertcpputbatch, which drops the socket refs and rewrites each slot with the socket cookie, then grows the batch. cursk/endsk ar...

Important: gpsd-minimal security update

gpsd is a service daemon that mediates access to a GPS sensor connected to the host computer by serial or USB interface, making its data on the location/course/velocity of the sensor available to be queried on TCP port 2947 of the host computer. The AlmaLinux support for this package is limited...

Schneider Electric SCADAPack and RemoteConnect Improper Check For Unusual or Exceptional Conditions (CVE-2026-0667)

CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause remote code execution, denial of service, and loss of confidentiality and integrity of the RTU controller when an unauthenticated attacker sends specially crafted Modbus TCP packets to the device...

EUVD-2026-47646

Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass...

CVE-2026-71265 Domoticz MochadTCP Stack Buffer Overflow via MOCHAD_RFSEC strcpy()

Domoticz's MochadTCP::MatchLine handler for MOCHADRFSEC messages hardware/MochadTCP.cpp copies network-received data from the up-to-1028-byte mmochadbuffer into a fixed 50-byte stack buffer tempRFSECbuf using strcpy with no length check, across three separate code branches DS10A/KR10A/MS10A devic...