📄 zlib crc32_combine_gen64 Denial of Service

zlib versions prior to 1.3.2 has an infinite loop vulnerability in the crc32combinegen64 function that can result in a denial of service condition. ============================================================================================================================================= | Title...

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

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CVE-2026-27171

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...

AZL-78203 CVE-2026-27171 affecting package zlib 1.2.13-2

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...

AZL-78027 CVE-2026-27171 affecting package teckit 2.5.12-4

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...

AZL-78179 CVE-2026-27171 affecting package rust 1.72.0-14

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...

AZL-78000 CVE-2026-27171 affecting package fltk 1.3.8-1

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...

AZL-77990 CVE-2026-27171 affecting package clucene 2.3.3.4-38

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...

AZL-78120 CVE-2026-27171 affecting package kata-containers 3.19.1.kata2-6

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...

AZL-78014 CVE-2026-27171 affecting package ogdi 4.1.0-9

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...

AZL-78009 CVE-2026-27171 affecting package gpsbabel 1.8.0-4

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...

AZL-78017 CVE-2026-27171 affecting package openjpeg2 2.3.1-12

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...

AZL-78021 CVE-2026-27171 affecting package ogdi 4.1.1-3

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...

CVE-2026-27171

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...

UBUNTU-CVE-2026-27171

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...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop in the crc32combinegen64 function. An attacker can cause excessive CPU consumption by providing negative argument that triggers a loop with no termination condition. Remediation Upgrade zlib to version 1.3.2 or higher...

CVE-2026-27171

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...

CVE-2026-27171

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...

CVE-2026-27171

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...

Linux Distros Unpatched Vulnerability : CVE-2026-27171

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...