CVE-2025-4820

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821 Incorrect congestion window growth by invalid ACK ranges

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821 Incorrect congestion window growth by invalid ACK ranges

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821

CVE-2025-4821 affects Cloudflare’s quiche (QUIC) prior to 0.24.4. The issue is “Incorrect congestion window growth” caused by processing invalid ACK ranges. An unauthenticated remote attacker can complete a handshake, initiate a congestion-controlled transfer, and send ACK frames covering a large...

CVE-2025-4820

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

PT-2025-26173 · Quiche · Quiche

Name of the Vulnerable Software and Affected Versions: quiche versions prior to 0.24.4 Description: The issue is related to incorrect congestion window growth, which could cause quiche to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can explo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: wifi: rtw88: Use ieee80211purgetxqueue to purge TX skb. When removing kernel modules using rmmod rtw888723cs rtw888703b rtw888723x rtw88sdio rtw88core, the driver uses skbqueuepurge to purge TX skb, but does not report the TX...

Security Bulletin: The following vulnerabilities that can affect IBM Storage Scale System are now included (CVE-2023-52486 CVE-2023-52881)

Summary The following vulnerabilities that can affect IBM Storage Scale System and could provide weaker than expected security are now fixed CVE-2023-52486 CVE-2023-52881. Vulnerability Details CVEID:CVE-2023-52881 DESCRIPTION: In the Linux kernel, the following vulnerability has been resolved:...

CVE-2025-29785

A flaw was found in quic-go. This vulnerability allows a malicious QUIC client to cause a nil-pointer dereference, leading to an application-level denial of service via specially crafted ACK packets following spoofed path validation probes. Mitigation Mitigation for this issue is either not...

CVE-2023-53121 tcp: tcp_make_synack() can be called from process context

In the Linux kernel, the following vulnerability has been resolved: tcp: tcpmakesynack can be called from process context tcprtxsynack now could be called in process context as explained in 0a375c822497 "tcp: tcprtxsynack can be called from process context". tcprtxsynack might call tcpmakesynack,...

UBUNTU-CVE-2025-23145

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix NULL pointer in canacceptnewsubflow When testing valkey benchmark tool with MPTCP, the kernel panics in 'mptcpcanacceptnewsubflow' because subflowreq-msk is NULL. Call trace: mptcpcanacceptnewsubflow...

CVE-2025-23145

Summary (CVE-2025-23145) : Linux kernel MPTCP component fix for a NULL pointer dereference in can_accept_new_subflow when subflow_req->msk is NULL. The issue could occur when a SYN-ACK is received twice in quick succession and the ownership of subflow_req->msk is transferred to the first su...

Anatomy of a SYN-ACK Attack

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PT-2025-18399

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability has been resolved in the Linux kernel related to the MPTCP protocol. The issue occurs when the kernel panics in 'mptcp can accept new subflow' due to a NULL pointer...

Linux Distros Unpatched Vulnerability : CVE-2023-52881

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is...

PT-2025-9199 · Ibc-Go · Ibc-Go

Name of the Vulnerable Software and Affected Versions: IBC-Go versions 7 and later Description: An issue was discovered in IBC-Go's deserialization of acknowledgements, resulting in non-deterministic behavior that can halt a chain. Any user who can open an IBC channel can introduce this state to...

CVE-2022-49372 tcp: tcp_rtx_synack() can be called from process context

In the Linux kernel, the following vulnerability has been resolved: tcp: tcprtxsynack can be called from process context Laurent reported the enclosed report 1 This bug triggers with following coditions: 0 Kernel built with CONFIGDEBUGPREEMPT=y 1 A new passive FastOpen TCP socket is created. This...