OESA-2026-2491 libvncserver security update

libvncserver is a set of programs using the RFB Remote Frame Buffer protocol. They are designed to "export" a frame buffer via net: you set up a server and can connect to it via VNC viewers. If the server supports WebSockets which LibVNCServer does, you can also connect using an in-browser VNC...

UBUNTU-CVE-2026-44988

LibVNCClient is a library for easy implementation of a VNC client. In 0.9.15 and earlier, LibVNCClient's Tight encoding decoder uses fixed-size 2048-pixel scratch buffers for the Gradient filter, but it does not reject Tight rectangles whose width is larger than 2048 pixels. A malicious VNC serve...

CVE-2026-44988

LibVNCClient is a library for easy implementation of a VNC client. In 0.9.15 and earlier, LibVNCClient's Tight encoding decoder uses fixed-size 2048-pixel scratch buffers for the Gradient filter, but it does not reject Tight rectangles whose width is larger than 2048 pixels. A malicious VNC serve...

EUVD-2026-32525

LibVNCClient is a library for easy implementation of a VNC client. In 0.9.15 and earlier, LibVNCClient's Tight encoding decoder uses fixed-size 2048-pixel scratch buffers for the Gradient filter, but it does not reject Tight rectangles whose width is larger than 2048 pixels. A malicious VNC serve...

ROS-20260524-73-0039

Vulnerability in perl-Compress-Raw-Zlib related to incorrect input of configuration data. The vulnerability can be exploited remotely...

ROS-20260524-73-0038

A vulnerability in the crc32combine64 and crc32combinegen64 functions of the open source lossless data compression library zlib is related to the fact that the x2nmodp function can perform right shifts in a loop without a termination condition. Exploitation of the vulnerability could allow an...

Fedora 42 : mysql8.4 (2026-a4e0e8211d)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a4e0e8211d advisory. MySQL 8.4.9 Release notes: https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-9.html Known issue: s390x-specific issue - zlib with DFLTCC...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix the folio leak on S390 hardware acceleration BUG After committing aa60fe12b4f4 “btrfs: zlib: refactor S390x HW acceleration buffer preparation”, we no longer release the folio of the page cache of the folio...

Fedora 44 : mysql8.4 (2026-92a75ddb71)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-92a75ddb71 advisory. MySQL 8.4.9 Release notes: https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-9.html Known issue: s390x-specific issue - zlib with DFLTCC...

Fedora 44 : mysql8.0 (2026-1704f705ab)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1704f705ab advisory. MySQL 8.0.46 Release notes: https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-46.html Known issue: s390x-specific issue - zlib with DFLTCC...

Unchecked `CryptoVec` allocation and growth handling

CryptoVec used unchecked capacity growth, unchecked length arithmetic, and unsafe allocation and locking paths. In affected russh releases, attacker-controlled input could reach these code paths through buffer resizing operations. Two affected reachability paths were identified: Current russh...

CVE-2026-43970 Decompression Bomb in cow_spdy:inflate/2 Allows Memory Exhaustion via Crafted SPDY Frame

Improper Handling of Highly Compressed Data Data Amplification vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cowspdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY...

CVE-2026-43970 Decompression Bomb in cow_spdy:inflate/2 Allows Memory Exhaustion via Crafted SPDY Frame

Improper Handling of Highly Compressed Data Data Amplification vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cowspdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY...

CVE-2026-43970: Improper Handling of Highly Compressed Data (Data Amplification)

Improper Handling of Highly Compressed Data Data Amplification vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cowspdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY...

The vulnerabilities of the functions crc32_combine64 and crc32_combine_gen64 in the open-source data compression library zlib allow attackers to cause service interruptions.

The vulnerability of the crc32combine64 and crc32combinegen64 functions in the open-source data compression library zlib relates to the fact that the x2nmodp function may perform right shifts within a loop without a termination condition. Exploiting this vulnerability could allow an attacker to...

Unity Linux 20.1070e Security Update: netty (UTSA-2026-017795)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017795 advisory. The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large...

Unity Linux 20.1070e Security Update: gstreamer1-plugins-good (UTSA-2026-017386)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017386 advisory. DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemuxinflate function which causes a segfault, or could...

JLSEC-2026-479

MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip464 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an...

JLSEC-2026-480 zlib before 1.3.2 allows CPU consumption via `crc32_combine64` and `crc32_combine_gen64` because...

zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combinegen64 because x2nmodp can do right shifts within a loop that has no termination condition...

The vulnerability of the zlib compression library in Wireshark, a network traffic analyzer, allows attackers to cause service interruptions.

The vulnerability of the zlib compression library, the traffic analyzer for computer networks like Wireshark, is related to the execution of a loop with improper memory management, leading to sequential memory allocation issues. Exploiting this vulnerability can allow attackers to cause service...