CVE-2026-29008: Integer Underflow (Wrap or Wraparound)

U-Boot through 2026.04-rc3 contains an integer underflow vulnerability in the tcprxstatemachine function net/tcp.c that allows a network-adjacent attacker to crash the bootloader by sending a malformed TCP SYN+ACK packet with a manipulated data offset field causing payloadlen to become negative...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: Fix double-free in teqlmasterxmit CVE-2026-23449 In the Linux kernel, the following vulnerability has been resolved: ext4: validate pidx bounds in ext4extcorrectindexes CVE-2026-31449 In the Linux...

PT-2026-56475

Name of the Vulnerable Software and Affected Versions U-Boot versions prior to 2026.04-rc3 Description An integer underflow exists in the tcp rx state machine function within net/tcp.c. A network-adjacent attacker can trigger this by sending a malformed TCP SYN+ACK packet with a manipulated data...

CVE-2026-55490

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490 OpenWrt: EAD Integer Underflow → Pre-Auth Denial of Service

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

EUVD-2026-42110

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490 OpenWrt: EAD Integer Underflow → Pre-Auth Denial of Service

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490

OpenWrt OpenWrt (embedded Linux) mediateces: CVE-2026-55490 affects the Emergency Access Daemon’s handle_send_a() where an integer underflow can lead to a pre-auth DoS by an unauthenticated attacker on the local network via a crafted UDP packet. The underflow causes a bounds-check misstep, then a...

GO-2026-5427 GoBGP has an Integer Underflow Issue in github.com/osrg/gobgp

GoBGP has an Integer Underflow Issue in github.com/osrg/gobgp...

SUSE-SU-2026:22702-1 Security update for krb5

This update for krb5 fixes the following issue - CVE-2026-11850: integer underflow in berval2tldata leads to heap out-of-bounds read bsc1268131...

Security Bulletin: Security vulnerabilities have been found in IBM Application Gateway

Summary Security vulnerabilities have been addressed in IBM Application Gateway Vulnerability Details CVEID:CVE-2026-40355 DESCRIPTION: In MIT Kerberos 5 aka krb5 before 1.22.3, there is a NULL pointer dereference if an application calls gssacceptseccontext on a system with a NegoEx mechanism...

Exploit for Integer Underflow (Wrap or Wraparound) in Microsoft

CVE-2026-42980 Public Disclosure This repository contains the...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: bonding: fix use-after-free due to enslave fail after slave array update CVE-2026-23171 In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it ...

CVE-2026-55490: Integer Underflow (Wrap or Wraparound)

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

PT-2026-56265

Name of the Vulnerable Software and Affected Versions OpenWrt versions prior to 25.12.5 Description An integer underflow occurs in the handle send a function of the Emergency Access Daemon. An unauthenticated attacker on the local network can trigger this by sending a single crafted UDP packet,...

PT-2026-67278

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.29.0 Description A heap buffer overflow exists in the server-side RAIL channel handler. The issue occurs within the rail server handle messages function in channels/rail/server/rail main.c when processing a RAIL PDU...

kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntrackh323 module. This vulnerability occurs in the DecodeQ931 function when processing a zero-length value from a packet. An integer underflow during a length calculation results in a large, incorrect value...

kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntrackh323 module. This vulnerability occurs in the DecodeQ931 function when processing a zero-length value from a packet. An integer underflow during a length calculation results in a large, incorrect value...

kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntrackh323 module. This vulnerability occurs in the DecodeQ931 function when processing a zero-length value from a packet. An integer underflow during a length calculation results in a large, incorrect value...