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 IDs covered (1)

🎯 Affected products1

• azl3 zlib 1.3.1-1 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.3.2-1

🔗 References (2)

• advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27171
• referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade