CVE-2014-6272: Debian Linux

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.

Affected products

• Debian Debian Linux: version 7.0 only
• Libevent Project Libevent: version 1.4.0 only; version 1.4.1 only; version 1.4.2 only; version 1.4.3 only; version 1.4.4 only; version 1.4.5 only; …

Published 2015-08-24. Last modified 2026-06-17.