Debian LTS released advisory DLA-4674-1 to patch a Chromium vulnerability on Debian 12 bookworm that could allow arbitrary code execution, denial of service, or data exposure. The organization also issued advisory DLA-4675-1 to resolve six reported vulnerabilities in the rlottie C++ rendering library for Debian 11 bullseye. Developers fixed undefined behavior issues in rlottie that previously caused crashes and affected Telegram Desktop, which relies on the package as its sole reverse dependency.

[DLA 4674-1] chromium security update
[DLA 4675-1] rlottie security update

[SECURITY] [DLA 4674-1] chromium security update

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Debian LTS Advisory DLA-4674-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
July 09, 2026 https://wiki.debian.org/LTS
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Package : chromium
Version : 150.0.7871.100-1~deb12u1
CVE ID : not yet available

Security issues were discovered in Chromium which could result
in the execution of arbitrary code, denial of service, or information
disclosure.

For Debian 12 bookworm, this problem has been fixed in version
150.0.7871.100-1~deb12u1.

We recommend that you upgrade your chromium packages.

For the detailed security status of chromium please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/chromium

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

[SECURITY] [DLA 4675-1] rlottie security update

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Debian LTS Advisory DLA-4675-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Nicholas Guriev
July 10, 2026 https://wiki.debian.org/LTS
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Package : rlottie
Version : 0.1+dfsg-2+deb11u2
CVE ID : CVE-2026-8916 CVE-2026-10305 CVE-2026-47306 CVE-2026-47318
CVE-2026-47319 CVE-2026-47320
Debian Bug : 994614 1138916 1138917 1138918 1138919 1138920 1139179

rLottie is a platform independent C++ library for rendering vector-based
animations and art. Its format is used by Telegram Desktop, fast and secure
messaging application, which is the only reverse dependency in Debian.

Several flaws caused by C++ undefined behavior in this library were recently
reported as CVE issues. The new update addresses six of them as well as
backports other crash fixes.

For Debian 11 bullseye, these problems have been fixed in version
0.1+dfsg-2+deb11u2.

We recommend that you upgrade your rlottie packages.

For the detailed security status of rlottie please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/rlottie

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS