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SUSE SLED15 / SLES15 / openSUSE 15 Security Update : zlib (SUSE-SU-2026:0783-1)

medium Nessus Plugin ID 300990

Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0783-1 advisory.

 This update for zlib fixes the following issue:

 - CVE-2026-27171: Fixed infinite loop via the `crc32_combine64` and `crc32_combine_gen64` functions due to missing checks for negative lengths (bsc#1258392).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.suse.com/1258392

http://www.nessus.org/u?6a86f897

https://www.suse.com/security/cve/CVE-2026-27171

Plugin Details

Severity: Medium

ID: 300990

File Name: suse_SU-2026-0783-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/5/2026

Updated: 3/5/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-27171

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:zlib-devel-32bit, p-cpe:/a:novell:suse_linux:libminizip1, p-cpe:/a:novell:suse_linux:zlib-devel-static, p-cpe:/a:novell:suse_linux:libz1, p-cpe:/a:novell:suse_linux:minizip-devel, p-cpe:/a:novell:suse_linux:zlib-devel, p-cpe:/a:novell:suse_linux:libz1-32bit, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/3/2026

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2026-27171

SuSE: SUSE-SU-2026:0783-1