CVE-2021-46700

In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
mitreCNA
---
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CVEADP
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---
Base Score
CVSS 3.x
EPSS Score
Percentile: 47%
VendorProductVersion
libsixel_projectlibsixel
1.8.6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libsixel
bullseye
no-dsa
bookworm
no-dsa
buster
no-dsa
stretch
no-dsa
sid
vulnerable
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsixel
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
ignored
Common Weakness Enumeration
References
https://github.com/saitoha/libsixel/issues/158
https://github.com/saitoha/libsixel/issues/158