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4.0
Libsixel Memory Leak in Malloc Stub Component
CVE-2025-61146
Summary
A memory leak was found in the malloc_stub.c component of libsixel, affecting versions prior to 1.8.7. This issue can cause performance degradation and potentially lead to system crashes if not addressed. Users should update to the latest version to prevent these issues.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| libsixel_project | libsixel | <= 1.8.7 | – |
Original title
saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.
Original description
saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component malloc_stub.c.
nvd CVSS3.1
4.0
Vulnerability type
CWE-401
Memory Leak
- https://gist.github.com/optionGo/1100e5be05c5558501a95f5e99160584 Third Party Advisory
- https://github.com/saitoha/libsixel/commit/e0ba6685262a3679cc5b9009c0c5b7dc8a3f2... Patch
- https://github.com/saitoha/libsixel/issues/207 Issue Tracking Vendor Advisory
Published: 23 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026