Debian LTS rolled out two urgent security patches targeting GIMP and Firefox ESR within the Debian GNU/Linux 11 (Bullseye) LTS environment. These updates fix a long list of CVEs that could let malicious files or web pages trigger arbitrary code execution or cause sudden application crashes.

[DLA 4547-1] gimp security updat
[DLA 4546-1] firefox-esr security update

[SECURITY] [DLA 4547-1] gimp security updat

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Debian LTS Advisory DLA-4547-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Thorsten Alteholz
April 23, 2026 https://wiki.debian.org/LTS
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Package : gimp
Version : 2.10.22-4+deb11u8
CVE ID : CVE-2026-4150 CVE-2026-4152 CVE-2026-4153

Several vulnerabilities were discovered in GIMP, the GNU Image
Manipulation Program, which could result in denial of service or
potentially the execution of arbitrary code if malformed PSP, JPEG
2000 or PSD files are opened.

For Debian 11 bullseye, these problems have been fixed in version
2.10.22-4+deb11u8.

We recommend that you upgrade your gimp packages.

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

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 4546-1] firefox-esr security update

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Debian LTS Advisory DLA-4546-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
April 23, 2026 https://wiki.debian.org/LTS
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Package : firefox-esr
Version : 140.10.0esr-1~deb11u1
CVE ID : CVE-2026-6746 CVE-2026-6747 CVE-2026-6748 CVE-2026-6749
CVE-2026-6750 CVE-2026-6751 CVE-2026-6752 CVE-2026-6753
CVE-2026-6754 CVE-2026-6757 CVE-2026-6761 CVE-2026-6762
CVE-2026-6763 CVE-2026-6764 CVE-2026-6765 CVE-2026-6766
CVE-2026-6767 CVE-2026-6769 CVE-2026-6770 CVE-2026-6771
CVE-2026-6772 CVE-2026-6776 CVE-2026-6785 CVE-2026-6786

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, spoofing, information disclosure or privilege escalation.

For Debian 11 bullseye, these problems have been fixed in version
140.10.0esr-1~deb11u1.

We recommend that you upgrade your firefox-esr packages.

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

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