CVE-2026-6535: Improperly Controlled Sequential Memory Allocation

Dissection engine zlib decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service...

Wireshark 安全漏洞

Wireshark is a set of network packet analysis software developed by the Wireshark team. The software’s function is to capture network packets and display detailed data for analysis. Versions of Wireshark from 4.6.0 to 4.6.4, as well as 4.4.0 to 4.4.14, have security vulnerabilities. These...

The vulnerability of the zstream_buffer_ungets() function in the zlib library, which allows an attacker to trigger a memory corruption.

The vulnerability of the zstreambufferungets function in the zlib library is related to the copying of buffers without checking the size of the input data. Exploiting this vulnerability could allow an attacker to cause memory corruption remotely...

PT-2026-36072

Name of the Vulnerable Software and Affected Versions Wireshark versions 4.6.0 through 4.6.4 Wireshark versions 4.4.0 through 4.4.14 Description A crash in the dissection engine during zlib decompression can lead to a denial of service. Recommendations Update Wireshark versions 4.6.0 through 4.6....

KLA91016 Multiple vulnerabilities in Wireshark

Multiple vulnerabilities were found in Wireshark. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code. Below is a complete list of vulnerabilities: 1. A denial of service vulnerability in Monero protocol dissector can be exploited to cause a denial...

Security Bulletin: Due to the use of Perl, IBM Tivoli Network Manager IP Edition (ITNM) is affected by vulnerable version of Zlib within Perl.

Summary Perl is used by IBM Tivoli Network Manager IP Edition ITNM for core agents processing, collectors and general tooling CVE-2026-4176. Vulnerability Details CVEID:CVE-2026-4176 DESCRIPTION: Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9...

zlib: Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption

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Buffer Overflow

zlib is vulnerable to a buffer overflow. The vulnerability is due to insufficient capacity validation in the zstreambufferungets function of Zlib::GzipReader before shifting existing data with memmove, which allows an attacker to trigger memory corruption by supplying crafted input that causes th...

zlib: zlib: Memory corruption via buffer overflow in Zlib::GzipReader

A flaw was found in zlib, a Ruby interface for the zlib compression/decompression library. The Zlib::GzipReader component contains a buffer overflow vulnerability. This occurs because the zstreambufferungets function does not ensure sufficient memory capacity before moving existing data, which ca...

AZL-85640 CVE-2026-35469 affecting package docker-compose for versions less than 2.27.0-11

spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count ...

AZL-85605 CVE-2026-35469 affecting package cri-o 1.30.1-1

spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count ...

Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption

Details A buffer overflow vulnerability exists in Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but fails to guarantee the backing Ruby string has enough capacity before the memmove shifts the existing data. This can lead to...

EUVD-2026-23278

Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption...

GHSA-G857-HHFV-J68W Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption

Details A buffer overflow vulnerability exists in Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but fails to guarantee the backing Ruby string has enough capacity before the memmove shifts the existing data. This can lead to...

CVE-2026-27820

A flaw was found in zlib, a Ruby interface for the zlib compression/decompression library. The Zlib::GzipReader component contains a buffer overflow vulnerability. This occurs because the zstreambufferungets function does not ensure sufficient memory capacity before moving existing data, which ca...

ALPINE-CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but...

AZL-83450 CVE-2026-27820 affecting package ruby for versions less than 3.3.5-8

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but...

DEBIAN-CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but...

CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but...

CVE-2026-27820

zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously produced output but...