PT-2026-21539 · Libsixel · Libsixel

Published 2025-01-01 · Updated 2026-03-06 · CVE-2025-61146

Positive Technologies (AI Summary)

CVSS v3.1

4.0

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Libsixel versions prior to 1.8.7

Description A memory leak exists in Libsixel versions prior to 1.8.7, specifically within the malloc stub.c component. This leak could potentially lead to resource exhaustion.

Recommendations Update to a version of Libsixel greater than or equal to 1.8.7.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2025-61146

Affected Products

Libsixel

References · 14

• https://github.com/saitoha/libsixel/issues/207 · Vendor Advisory
• https://github.com/saitoha/libsixel/commit/e0ba6685262a3679cc5b9009c0c5b7dc8a3f262e · Patch
• https://ubuntu.com/security/CVE-2025-61146 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-61146 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-61146 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-61146 · Security Note
• https://osv.dev/vulnerability/CVE-2025-61146 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-61146 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-61146 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/2026023292964852020 · Twitter Post
• https://twitter.com/threatcluster/status/2029844510746788000 · Twitter Post
• https://twitter.com/CVEnew/status/2026265045756186644 · Twitter Post
• https://t.me/cveNotify/153002 · Telegram Post
• https://gist.github.com/optionGo/1100e5be05c5558501a95f5e99160584 · Note