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libevent

Multiple security vulnerabilities have been identified in the libevent library used in Red Hat Hardened Images. These include denial of service, memory corruption, buffer overflow, request smuggling, arbitrary code execution, and access control bypass issues. The vulnerabilities affect specific stable versions of libevent and have been addressed in updated packages.

The libevent library, which provides asynchronous event notification, contains several security flaws including denial of service via malformed RPC data (CVE-2026-63383), off-by-one stack buffer overflow (CVE-2026-63387), use-after-free memory corruption (CVE-2026-63381), integer conversion error causing denial of service (CVE-2026-63384), multiple HTTP parser bugs enabling request smuggling (CVE-2026-63382), arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388), HTTP header handling bugs risking access control bypass (CVE-2026-63385), and HTTP header smuggling allowing authorization bypass or cache poisoning (CVE-2026-63379). These vulnerabilities affect various stable versions of libevent used in Red Hat Hardened Images and related products.

Detailed information about Libevent: Prior to 2.1.13 and 2.2.2-a ...) (CVE-2026-63379) affecting null libevent. Get real-time updates, technical details, and mi

Libevent: Prior to 2.1.13 and 2.2.2-a ...) (CVE-2026-63379) - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:60853

https://access.redhat.com/security/cve/CVE-2026-63379

https://access.redhat.com/security/cve/CVE-2026-63381

https://access.redhat.com/security/cve/CVE-2026-63383

https://access.redhat.com/security/cve/CVE-2026-63384

https://access.redhat.com/security/cve/CVE-2026-63388

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

https://images.redhat.com/

Canonical URL

https://access.redhat.com/errata/RHSA-2026:67909

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

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https://access.redhat.com/errata/RHSA-2026:67910

Red Hat Security Advisory: libevent security update

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