========================================================================== Ubuntu Security Notice USN-7972-2 May 26, 2026
opencc vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
OpenCC could be made to crash if it received specially crafted input.
Software Description:
- opencc: simplified-traditional Chinese conversion library
Details:
USN-7972-1 fixed a vulnerability in OpenCC. This update provides the
corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that OpenCC incorrectly handled truncated UTF-8 input.
An attacker could possibly use this issue to cause OpenCC to crash,
resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
libopencc2 1.0.5+git20190530-1ubuntu0.1~esm1
Available with Ubuntu Pro
opencc 1.0.5+git20190530-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
libopencc2 1.0.4-5ubuntu0.1~esm1
Available with Ubuntu Pro
opencc 1.0.4-5ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7972-2
https://ubuntu.com/security/notices/USN-7972-1
CVE-2025-15536
signature.asc
Description: OpenPGP digital signature
