CVE-2014-6272 Integer overflow in n/a

What is CVE-2014-6272?

CVE-2014-6272 is a high-severity vulnerability in Debian Debian Linux, published on 24 Aug 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-189

Which versions are affected by CVE-2014-6272?

It affects 2 products.

Products include Debian Debian Linux, Libevent Project Libevent.

How do I fix CVE-2014-6272?

Upgrade to a fixed version.

Is CVE-2014-6272 being exploited?

There is no known exploitation of CVE-2014-6272 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-6272, DLA-137-1, GHSA-246p-m32j-f38r, MGASA-2015-0009, UBUNTU-CVE-2014-6272, USN-2477-1 and 2 more.