CVE-2026-7424

CVE-2026-7424 describes an integer underflow in the DHCPv6 sub-option parser of FreeRTOS-Plus-TCP. The issue affects FreeRTOS-Plus-TCP versions before V4.4.1 and before V4.2.6, and is triggered when DHCPv6 is enabled. An adjacent network actor can exploit the underflow by sending a crafted DHCPv6...

EUVD-2026-26277

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service permanent IP task freeze requiring hardware reset ...

CVE-2026-7424 Integer Underflow in DHCPv6 Sub-Option Parser in FreeRTOS-Plus-TCP

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service permanent IP task freeze requiring hardware reset ...

CVE-2026-7423

The CVE affects FreeRTOS-Plus-TCP: an integer underflow in ICMP/ICMPv6 echo reply handling prior to V4.4.1 and V4.2.6. Subtracting header sizes from a packet length without validating size enables a heap out-of-bounds read (~65KB), allowing an adjacent attacker to cause a device crash (DoS) when ...

CVE-2026-7423 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP

Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service device crash when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without...

CVE-2026-7423 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP

Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service device crash when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without...

xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of servi...

Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

...

PT-2026-35975

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service permanent IP task freeze requiring hardware reset ...

FreeRTOS-Plus-TCP 数字错误漏洞

FreeRTOS-Plus-TCP is an extensible, open-source, and thread-safe TCP/IP stack designed for use with FreeRTOS. Versions prior to V4.4.1 and V4.2.6 of FreeRTOS-Plus-TCP contained a numerical error vulnerability. This vulnerability stemmed from integer underflow in the DHCPv6 sub-option parser, whic...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : UltraJSON vulnerabilities (USN-8219-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8219-1 advisory. Cameron Criswell discovered that UltraJSON contained a memory leak that would occur when parsing large integers. An...

xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of servi...

CVE-2026-40356

In MIT Kerberos 5 aka krb5 before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gssacceptseccontext on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process t...

SUSE SLES15 Security Update : freerdp (SUSE-SU-2026:1634-1)

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1634-1 advisory. - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRETOSURFACE2 PDU bsc1258919. - CVE-2026-25942: Global-buffer-overfl...

ALSA-2026:11369 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling CVE-2026-33999 xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential...

SUSE SLES12 Security Update : freerdp (SUSE-SU-2026:1635-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1635-1 advisory. - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRETOSURFACE2 PDU bsc1258919. - CVE-2026-25942: Global-buffer-overfl...

CVE-2026-40356

In MIT Kerberos 5 aka krb5 before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gssacceptseccontext on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process t...

CVE-2026-40356

In MIT Kerberos 5 aka krb5 before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gssacceptseccontext on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process t...

MIT Kerberos 数字错误漏洞

MIT Kerberos is a software used by the Massachusetts Institute of Technology MIT for authentication in network clusters. As a network authentication protocol, its design goal is to provide robust authentication services for client/server applications through a key system. Prior to version 5.1.2.3...

modsecurity3 -- multiple vulnerabilities

ModSecurity is an open source web application firewall engine. According to the upstream changelog, multiple vulnerabilities have been fixed. CVE-2026-42268: unsigned integer underflow in verify operators CVE-2026-30923: buffer overflow in hexdecode...