Use of Insufficiently Random Values Affecting libkcapi-hmaccalc-debuginfo package, versions <0:1.4.0-3.el8_10


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.35% (27th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ROCKY8-LIBKCAPIHMACCALCDEBUGINFO-19846874
  • published16 Sept 2026
  • disclosed5 Aug 2026

Introduced: 5 Aug 2026

CVE-2026-71225  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libkcapi-hmaccalc-debuginfo to version 0:1.4.0-3.el8_10 or higher.
This issue was patched in RLSA-2026:67266.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libkcapi-hmaccalc-debuginfo package and not the libkcapi-hmaccalc-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing.

CVSS Base Scores

version 3.1