Integer Overflow or Wraparound Affecting libevent-debugsource package, versions <0:2.1.13-1.el10_2


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.52% (42nd percentile)

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  • Snyk IDSNYK-ROCKY10-LIBEVENTDEBUGSOURCE-19895987
  • published18 Sept 2026
  • disclosed20 Aug 2026

Introduced: 20 Aug 2026

CVE-2026-63384  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 libevent-debugsource to version 0:2.1.13-1.el10_2 or higher.
This issue was patched in RLSA-2026:67909.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libevent-debugsource package and not the libevent-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an incorrect integer conversion in event_tagging.c when evtag_unmarshal_header uses evtag_decode_int to decode an attacker-controlled uint32 payload length and returns it as a signed int. Values above INT_MAX become negative or truncated, and evtag_unmarshal_string can use the converted value in allocation sizing, producing a wrapped large allocation request and denial of service. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.

CVSS Base Scores

version 3.1