SB2026102712 - Anolis OS update for libevent

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Main Vulnerability Database SB2026102712

SB2026102712 - Anolis OS update for libevent

Published: October 27, 2026

Security Bulletin ID SB2026102712
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Expired pointer dereference (CVE-ID: CVE-2026-63381)

CWE-ID: CWE-825 - Expired pointer dereference

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to a dangling pointer in evbuffer_add_buffer_reference when handling a buffer state where out_total_len == 0. A remote attacker can trigger a specific sequence of buffer operations to disclose sensitive information.

The issue was found by fuzzing, and exploitation appears to require a specific sequence of buffer operations.


Remediation

Install update from vendor's website.

References