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.

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.

The version of CBL-Mariner Releases installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2026-27171 advisory.

  - 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. (CVE-2026-27171)

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

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 crc32_combine64 and crc32_combine_gen64 because x2nmodp can     do right shifts within a loop that has no termination condition. (CVE-2026-27171)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
300990	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : zlib (SUSE-SU-2026:0783-1)	Nessus	SuSE Local Security Checks	medium
299791	Azure Linux 3.0 Security Update: CBL-Mariner Releases (CVE-2026-27171)	Nessus	Azure Linux Local Security Checks	medium
299392	Linux Distros Unpatched Vulnerability : CVE-2026-27171	Nessus	Misc.	medium

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CVE-2026-27171

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