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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

A vulnerability in libkcapi affects one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as CTR or CBC. The library improperly reuses the Initialization Vector (IV) for each internal data chunk, weakening data confidentiality and potentially affecting data integrity. This issue impacts Red Hat Hardened Images RPMs including libkcapi versions 0.10.1 and 1.5.1-0.1.hum1. No official patch fix is currently indicated in the advisory, but mitigation involves avoiding one-shot symmetric cipher APIs for large inputs and using streaming interfaces instead.

CVE-2026-71225 is a vulnerability in libkcapi where one-shot symmetric cipher operations on inputs larger than 64 KiB in stateful modes (e.g., CTR, CBC) reuse the Initialization Vector (IV) across internal data chunks. This IV reuse can expose relationships in encrypted plaintext, significantly weakening confidentiality and potentially causing incorrect cryptographic processing that affects integrity. The vulnerability affects Red Hat Hardened Images RPMs including libkcapi versions =0.10.1 and =1.5.1-0.1.hum1 on aarch64 and x86_64 architectures. Red Hat advises mitigating the issue by avoiding one-shot symmetric cipher APIs for large inputs and using streaming interfaces or ensuring inputs remain below the chunking threshold. There is no explicit mention of an official patch or fix released yet in the advisory.

Detailed information about A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes su

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… (CVE-2026-71225) - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:56985

https://access.redhat.com/security/cve/CVE-2026-71226

https://access.redhat.com/security/cve/CVE-2026-71227

https://access.redhat.com/security/updates/classification/

https://images.redhat.com/

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Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

libkcapi

Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.

The vulnerability in libkcapi (CVE-2026-71226) involves memory corruption via uncanceled AIO requests on error in the one-shot AIO path. When an error occurs before all IOCBs are processed, kernel writes may occur into output buffers that the application has already freed or reused, leading to use-after-free conditions. This can cause memory corruption, potential denial of service, information disclosure, or arbitrary code execution. Exploitation requires the application to use the KCAPI_INIT_AIO flag and mishandle output buffers after error returns. The flaw does not impact default synchronous configurations and requires local attacker capabilities. No official fix is currently documented in the vendor advisory, but mitigation involves avoiding the KCAPI_INIT_AIO flag or ensuring output buffers remain valid until all kernel completions finish.

Detailed information about CVE-2026-71226: Use After Free in Red Hat Red Hat Enterprise Linux 10 affecting Red Hat Red Hat Enterprise Linux 10. Get real-time up

CVE-2026-71226: Use After Free in Red Hat Red Hat Enterprise Linux 10 - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-71226: Use After Free in Stephan Muelle libkcapi


Red Hat Security Advisory: Red Hat Hardened Images RPMs Security UpdateCVE-2026-71225 0 A vulnerability in libkcapi affects one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as CTR or CBC. The library improperly reuses the Initialization Vector (IV) for each internal data chunk, weakening data confidentiality and potentially affecting data integrity. This issue impacts Red Hat Hardened Images RPMs including libkcapi versions 0.10.1 and 1.5.1-0.1.hum1. No official patch fix is currently indicated in the advisory, but mitigation involves avoiding one-shot symmetric cipher APIs for large inputs and using streaming interfaces instead. MediumVulnerability#gcve #osv #ghsa-qv62-qmw8-96h9 Join the discussion	GCVE Database	08/19/2026, 13:15:02 UTC Added: 08/05/2026, 18:47:05 UTC
CVE-2026-71226: Use After Free in Stephan Muelle libkcapiCVE-2026-71226 0 Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers. HighVulnerability#cve #cve-2026-71226 #gcve Join the discussion	CVE Database V5	08/05/2026, 12:37:17 UTC Added: 08/05/2026, 13:13:07 UTC

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