PT-2026-106628

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A division by zero crash can occur in the tcp rcvbuf grow and tcp rcv space adjust functions. This happens when tcp rmem1 is configured with an extremely small value, causing tp-rcvq...

PT-2026-106584

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.2.10-1.1 Description An issue exists in the TCP implementation where old ACKs Acknowledgment numbers before SND.UNA and ACKs after SND.NXT are not properly excluded from the TCP fast path. This allows such ACKs...

Malicious code in btc-wallet-tools (RubyGems)

Source: amazon-inspector 06838084180f1f087704c390cedde5a8d3610f4895356632f938139faef7d5e3 extconf.rb in this gem decodes a base64-encoded Ruby payload with Base64.decode64 and executes it via eval inside a double-forked, Process.setsid-detached child. The decoded payload opens a TCP socket to...

Zerologon CVE-2020-1472 Detect

Detects CVE-2020-1472 Zerologon by attempting Netlogon NetrServerAuthenticate3 with all-zero credentials against the domain controller Netlogon RPC interface TCP/135 or 445. !/usr/bin/env python3 -- coding: utf-8 -- """Detect Zerologon Netlogon authentication bypass CVE-2020-1472.""" from...

kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

A flaw was found in the Linux kernel's NVMe Non-Volatile Memory Express over TCP nvme-tcp component. A malicious NVMe controller can exploit this vulnerability by sending a Ready to Transfer R2T command for a read request. The host system, failing to properly validate the request direction, will...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: fixed a double-free on the socket destructor function When an MPTCP server accepts an incoming connection, it clones its listener socket. However, the pointer to ‘inetopt’ for the new socket has the same value as the...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsitcp: A UAF use-after-free error occurs during login when accessing the host’s IP address. If the iscsitcpr2tpoolalloc function fails during iscsiswtcpsessioncreate, the user space may access the host’s IP address. If t...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: tcp: Call skdataready after listener migration When inetcsklistenstop migrates an established child socket from a closing listener to another socket within the same SOREUSEPORT group, the target listener receives a new...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: always handle address removal under msk socket lock Syzkaller reported a lockdep splat in the PM control path: WARNING: CPU: 0 PID: 6693 at ./include/net/sock.h:1711 sockownedbyme include/net/sock.h:1711 inline WARNING:...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The UAF issue in ksmbdtcpnewconnection has been fixed. The race that occurs is between the process of handling a new TCP connection and its disconnection. This causes a UAF error in the struct tcptransport structure within...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mptcp: Race condition in the creation of subflows in mptcprcvspaceadjust. Additional active subflows—i.e., those created by the kernel’s internal processes—are included in the subflow list before the 3whs process starts. If the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Check INITFAILED before calling nvmetrequninit in the digest error path. In nvmettcptryrecvddgst, when a data digest mismatch is detected, nvmetrequninit is called unconditionally. However, if the command originates fr...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: tcp: Fix use-after-free in bpfitertcpestablishedbatch reqskqueuehashreq publishes a TCPNEWSYNRECV requestsock onto the ehash chain, releases the bucket lock, and only afterwards sets rskrefcnt to 3. Lockless readers such as...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nfconntrack: Defer invalid logs until after unlock is performed. TCP and SCTP conntrack processes may generate invalid packet logs while ct-lock is still held. When invalid logging is directed to nfnetlinklog, and...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: Do not force the CLOSE state on an invalidseqrst packet without checking the direction. An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipvs: Use the parsed transport offset in the TCP state lookup. The TCP state handling processes the skb again to find the TCP header. For IPv6, it uses sizeofstruct ipv6hdr. Meanwhile, the surrounding IPVS code has already parsed...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: checks the data direction of a C2HData PDU The nvmetcphandlec2hdata function finds the request by command id and checks that it has a payload. However, it does not check that the command actually requested data to be...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: inet: Sk-skrxdst was converted to RCU rules. The syzbot reported various issues related to early demux processing. One of these issues is included in this changelog 1. Sk-skrxdst uses RCU protection without proper documentatio...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: Fixed the skmemuncharge logic in tcpbpfsendmsg. The current sk memory accounting logic in SKREDIRECT involves pre-charging bytes to be sent, where the value is either msg-sg.size or a smaller value, applybytes. Potential...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed issues related to data races around sysctltcprecovery. When reading sysctltcprecovery, it can be changed concurrently. Therefore, we need to add READONCE to its readers...