CVE-2026-33983 FreeRDP: Progressive Codec Quant BYTE Underflow - UB + CPU DoS

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressivedecompresstileupgrade detects a mismatch via progressiverfxquantcmpequal but only emits WLogWARN, execution continues. The wrapped value 247 is used as a shift exponent, causing undefined behavior...

CVE-2026-33983

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressivedecompresstileupgrade detects a mismatch via progressiverfxquantcmpequal but only emits WLogWARN, execution continues. The wrapped value 247 is used as a shift exponent, causing undefined behavior...

15-Year-Old strongSwan Flaw Lets Attackers Crash VPNs via Integer Underflow

15-year-old strongSwan flaw allows attackers to crash VPNs via integer underflow bug, affecting EAP-TTLS plugin and multiple versions worldwide...

kernel: can: j1939: j1939_session_new(): fix skb reference counting

In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939sessionnew: fix skb reference counting Since j1939sessionskbqueue does an extra skbget for each new skb, do the same for the initial one in j1939sessionnew to avoid refcount underflow. mkl: clean up commit messag...

CVE-2026-33983

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressivedecompresstileupgrade detects a mismatch via progressiverfxquantcmpequal but only emits WLogWARN, execution continues. The wrapped value 247 is used as a shift exponent, causing undefined behavior...

MGASA-2026-0072 Updated strongswan packages fix security vulnerability

strongSwan 4.5.0 6.0.5 EAP-TTLS AVP Parsing Integer Underflow. CVE-2026-25075...

Updated strongswan packages fix security vulnerability

strongSwan 4.5.0 6.0.5 EAP-TTLS AVP Parsing Integer Underflow. CVE-2026-25075...

OESA-2026-1763 glib2 security update

GLib is a bundle of three formerly five low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since. Security Fixes: A flaw was found in GLib, which is...

OESA-2026-1716 freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol RDP that follows Microsoft's open specifications. This package provides the client applications xfreerdp. Security Fixes: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, Integer Underflow in...

strongSwan CVE-2026-25075 Vulnerability Assessment Tool

This tool allows you to safely detect whether a strongSwan VPN server is vulnerable to CVE-2026-25075 without causing any disruption. CVE-2026-25075 is an integer underflow vulnerability in strongSwan's EAP-TTLS plugin that allows remote, unauthenticated attackers to crash the IKE daemon through ...

CVE-2026-0966 Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI Generic Security Service Application Program Interface authentication if the server's logging verbosity is se...

CVE-2026-0966

A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI Generic Security Service Application Program Interface authentication if the server's logging verbosity is se...

CVE-2026-0966

CVE-2026-0966 affects the libssh library with a buffer underflow in ssh_get_hexa() on invalid input. The issue occurs because ssh_get_hexa() is used by ssh_get_fingerprint_hash() and the deprecated ssh_print_hexa(), and also in gssapi logging. Remote triggering is possible when GSSAPI authenticat...

CVE-2026-0966 Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI Generic Security Service Application Program Interface authentication if the server's logging verbosity is se...

CVE-2026-1005

Integer underflow in wolfSSL packet sniffer = 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by sslDecodePacket. The underflow wraps a 16-bit length to a large...

CVE-2026-3549

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving...

CVE-2026-29078

Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx-bufferused -= size with a stale size = 3 causes an integer underflow that wraps to SIZEMAX. Afterwards, memcpy is called with ...

Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources

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strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow

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SUSE CVE-2026-25075

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the...