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Use of Insufficiently Random Values The advisory has been revoked - it doesn't affect any version of package rhcos  (opens in a new tab)

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EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-RHEL8-RHCOS-18568365
  • published6 Aug 2026
  • disclosed5 Aug 2026
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Introduced: 5 Aug 2026

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

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rhcos package and not the rhcos package as distributed by RHEL.

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.