CVE-2026-26457

ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a null pointer dereference vulnerability in the coapdumpmsg function when processing COAP messages containing options with zero length...

Nmap 7.99 Memory Exhaustion

Nmap version 7.99 and earlier contain a loop with an unreachable exit condition in the Packet:parseoptions method of nselib/packet.lua. A remote host that is the target of a scan can exhaust the memory of the scanning Nmap process and terminate it by replying with a packet that carries a...

CVE-2026-26457

The ccoap library (version 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 ) contains a null pointer dereference vulnerability within the coap_dump_msg() function. This flaw is triggered when the software processes COAP messages that include options with zero length . The impact of this vulnerability is...

openssl: SSL_select_next_proto buffer overread

A flaw was found in OpenSSL. Affected versions of this package are vulnerable to Information Exposure through the SSLselectnextproto function. This flaw allows an attacker to cause unexpected application behavior or a crash by exploiting the buffer overread condition when the function is called...

CVE-2026-80573: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Input: iforce - validate input packet lengths iforceprocesspacket reads fixed fields from joystick, wheel and status packets without first checking their lengths. In particular, the shared hats-and-buttons helper unconditionally...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098771)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098771 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackh323: check for zero length in DecodeQ931 In DecodeQ931, the UserUserIE cod...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098881)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098881 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: marvell/cesa - Handle zero-length skcipher requests Do not access random memory for...

openssl: SSL_select_next_proto buffer overread

A flaw was found in OpenSSL. Affected versions of this package are vulnerable to Information Exposure through the SSLselectnextproto function. This flaw allows an attacker to cause unexpected application behavior or a crash by exploiting the buffer overread condition when the function is called...

CVE-2026-72330

A flaw was found in the Linux kernel's TLS Transport Layer Security implementation. A remote attacker could send specially crafted zero-length TLS application data records. This could cause the system to repeatedly process these empty records, blocking all subsequent legitimate data on the...

SUSE CVE-2026-68145

In the Linux kernel, the following vulnerability has been resolved: iomap: fix out-of-bounds bitmapset with zero-length range ifssetrangedirty and ifssetrangeuptodate compute lastblk as off + len - 1 iblkbits. When off is 0 and len is 0, the unsigned subtraction underflows to SIZEMAX, producing a...

SUSE CVE-2026-53792

rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a malicious receiver to trigger memory access before the start of an allocated buffer by sending a crafted checksum block with a length of zero. Attackers can send a specially craft...

SUSE CVE-2026-72712

Nmap versions up to and including 7.99 contains a denial of service vulnerability that allows remote attackers to crash the application by sending a crafted packet containing a zero-length TCP option. The malformed packet forces the Packet:parseoptions function in nselib/packet.lua to allocate...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-100152)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100152 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: marvell/cesa - Handle zero-length skcipher requests Do not access random memory for...

CVE-2026-72330

In the Linux kernel, the following vulnerability has been resolved: net/tls: Consume empty data records in tlsswreadsock A peer may send a zero-length TLS applicationdata record; TLS 1.3 explicitly permits these as a traffic-analysis countermeasure RFC 8446, Section 5.1. After decryption such a...

UBUNTU-CVE-2026-72330

In the Linux kernel, the following vulnerability has been resolved: net/tls: Consume empty data records in tlsswreadsock A peer may send a zero-length TLS applicationdata record; TLS 1.3 explicitly permits these as a traffic-analysis countermeasure RFC 8446, Section 5.1. After decryption such a...

CVE-2026-72330

In the Linux kernel, the following vulnerability has been resolved: net/tls: Consume empty data records in tlsswreadsock A peer may send a zero-length TLS applicationdata record; TLS 1.3 explicitly permits these as a traffic-analysis countermeasure RFC 8446, Section 5.1. After decryption such a...

CVE-2026-72330

The CVE-2026-72330 entry documents a Linux kernel vulnerability in the TLS data path. A peer can send a zero-length TLS application_data record (TLS 1.3 allows these as a traffic-analysis countermeasure). After decryption such a record has full_len == 0 and, in tls_sw_read_sock(), the read loop r...

Nmap 7.99 Denial of Service via Zero-Length TCP Option Packet

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PT-2026-72518

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the tls sw read sock function where the system fails to properly handle zero-length TLS application data records, which are permitted in TLS 1.3 as a countermeasure...

ALPINE-CVE-2026-53792

rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a malicious receiver to trigger memory access before the start of an allocated buffer by sending a crafted checksum block with a length of zero. Attackers can send a specially craft...