gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment

A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service...

dnsmasq: NSEC bitmap parsing infinite loop

A denial of service vulnerability was discovered in dnsmasq's DNSSEC validation. When parsing NSEC and NSEC3 bitmap records, the window iteration logic fails to account for the 2-byte window header when advancing through the bitmap data. A specially crafted DNS response with a zero-length bitmap...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: festival (UTSA-2026-016710)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016710 advisory. festivalserver in Centre for Speech Technology Research CSTR Festival, probably 2.0.95-beta and earlier, places a zero-length directory name in the LDLIBRARYPATH,...

Exploit for Untrusted Pointer Dereference in Microsoft

CVE-2026-40369: Defensive Analysis of the 12-Byte Windows Kern...

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

In the Linux kernel, the following vulnerability has been resolved: USB: usbtmc: Fixed the direction of 0-length ioctl control messages The syzbot fuzzer identified a issue with the usbtmc driver: When a user sends an ioctl with a 0-length control transfer, the driver does not check whether the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: hwmon: tps53679 Fixed array access with zero-length block reads. i2csmbusreadblockdata can return 0, indicating a zero-length read. When this occurs, tps53679identifychip accesses bufret - 1, which is actually buf-1. This mean...

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

Transmitted requests in Xen’s virtual network protocol can consist of multiple parts. Although none of them are actually useful, except for the initial part, any of these parts can be of zero length, meaning they carry no data at all. In addition to the certain initial portion of the data to be...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: i2c: rtl9300 – ensure that the data length is within the supported range. A explicit check for the transfer length should be added to ‘rtl9300i2cconfigxfer’ to ensure that the data length is not within the supported range. In...

Astra Linux – Vulnerability in c-ares

c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service attacks. When a target resolver sends a query, the attacker creates a malformed UDP packet with a length of 0 and sends it back to the target resolver. The target resolver misinterprets this 0-length field as an...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: Rejects zero-length fixed buffer imports. The validatefixedrange function allows for the use of bufaddr at the exact end of the registered region when len is zero. This occurs because the check uses a strict...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

A flaw was discovered in vringhkiovadvance in drivers/vhost/vringh.c, located in the host side of a virtio ring within the Linux Kernel. This issue may lead to a denial of service from the guest to the host through zero-length descriptors...

Astra Linux – Vulnerability in opensc

A flaw was discovered in OpenSC packages that could allow for a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length PIN is passed. This issue poses a security risk, especially for OS...

Astra Linux – Vulnerability in Wireshark

In Wireshark versions 3.0.0 to 3.0.3, and 2.6.0 to 2.6.10, the Gryphon dissector could enter an infinite loop. This issue was addressed in the plugin file plugins/epan/gryphon/packet-gryphon.c by checking for a packet length of zero...

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

In the Linux kernel, the following vulnerabilities have been resolved: usb: cdns3: Fixed a memory double-free issue when handling zero-length packets. 829: If request-complete, then: 830 spinunlock&privdev-lock; 831 usbgadgetgivebackrequest&privep-endpoint, 832 request; 833 spinlock&privdev-lock;...

dnsmasq: NSEC bitmap parsing infinite loop

A denial of service vulnerability was discovered in dnsmasq's DNSSEC validation. When parsing NSEC and NSEC3 bitmap records, the window iteration logic fails to account for the 2-byte window header when advancing through the bitmap data. A specially crafted DNS response with a zero-length bitmap...

dnsmasq: NSEC bitmap parsing infinite loop

A denial of service vulnerability was discovered in dnsmasq's DNSSEC validation. When parsing NSEC and NSEC3 bitmap records, the window iteration logic fails to account for the 2-byte window header when advancing through the bitmap data. A specially crafted DNS response with a zero-length bitmap...

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...

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-2025-56352

In tinyMQTT commit 6226ade15bd4f97be2d196352e64dd10937c1962 2024-02-18, the broker mishandles protocol violations during CONNECT packet parsing. When receiving a CONNECT packet with a zero-length Client ID while CleanSession is set to 0, the broker correctly replies with a CONNACK return code 0x0...

CVE-2025-56352

CVE-2025-56352 affects the tinyMQTT broker. When processing a CONNECT packet with a zero-length Client ID and CleanSession=0, the broker returns CONNACK 0x02 (Identifier Rejected) but fails to explicitly close the TCP connection, leaving the socket open. Repeated invalid CONNECT attempts can exha...