Recent security advisories from Debian and Freexian address critical vulnerabilities across three major packages including nginx, the Linux kernel, and Apache HTTP server. Attackers could exploit these flaws to bypass authorization rules, cause service disruptions, leak memory contents, escalate local privileges, or run malicious code remotely. Fixed versions are already available for older Debian releases like bookworm, trixie, bullseye, and buster. System administrators need to install these updates immediately to keep their infrastructure secure.

Debian GNU/Linux 10 (Buster) Extended LTS:
ELA-1719-1 apache2 security update

Debian GNU/Linux 11 (Bookworm) LTS:
[DLA 4587-1] linux security update

Debian GNU/Linux 12 (Bookworm) and 13 (Trixie):
[DSA 6278-1] nginx security update

[SECURITY] [DSA 6278-1] nginx security update

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Debian Security Advisory DSA-6278-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
May 16, 2026 https://www.debian.org/security/faq
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Package : nginx
CVE ID : CVE-2026-40701 CVE-2026-42934 CVE-2026-42945
CVE-2026-42946 CVE-2026-40460

Multiple vulnerabilities were discoverd in Nginx, a high-performance web
and reverse proxy server, which could result in bypass of authorisation
rules or rate limits, denial of service or memory disclosure.

For the oldstable distribution (bookworm), these problems have been fixed
in version 1.22.1-9+deb12u7.

For the stable distribution (trixie), these problems have been fixed in
version 1.26.3-3+deb13u5.

We recommend that you upgrade your nginx packages.

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

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

[SECURITY] [DLA 4587-1] linux security update

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Debian LTS Advisory DLA-4587-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Ben Hutchings
May 16, 2026 https://wiki.debian.org/LTS
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Package : linux
Version : 5.10.251-5
CVE ID : CVE-2026-46333

A vulnerability has been discovered in the Linux kernel that may
lead to information leaks or local privilege escalation.

For Debian 11 bullseye, this problem has been fixed in version
5.10.251-5.

We recommend that you upgrade your linux packages.

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

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

ELA-1719-1 apache2 security update (by )

Package : apache2

Version : 2.4.59-1~deb10u7 (buster)

Related CVEs :
CVE-2026-24072
CVE-2026-28780
CVE-2026-29168
CVE-2026-29169
CVE-2026-33006
CVE-2026-33007
CVE-2026-33523
CVE-2026-33857
CVE-2026-34032
CVE-2026-34059

Multiple vulnerabilities have been discovered in the Apache HTTP server,
which may result in remote code execution, privilege escalation, denial
of service or information disclosure.

ELA-1719-1 apache2 security update (by )