Debian has released six security patches released to address critical flaws across NSS, Postfix, PHP 7.4, PHP 8.2, OpenJDK 25, and libgd2. These updates resolve CVEs that enable arbitrary code execution through malformed certificates, SQL injection via backslash escaping errors, denial of service from unbounded recursion, and invalid certificate validation in Java archives. The advisory provides exact version numbers for Debian Stretch through Trixie, ensuring each affected package receives a targeted version bump. Users should deploy these patches through their standard package managers to eliminate the identified vulnerabilities across their respective operating systems.

ELA-1800-1 nss security update (by )
[DSA 6430-1] postfix security update
[DLA 4733-1] php7.4 security update
[DLA 4732-1] php8.2 security update
[DSA 6431-1] openjdk-25 security update
[DLA 4731-1] libgd2 security update

ELA-1800-1 nss security update (by )

Package : nss

Version : 2:3.26.2-1.1+deb9u11 (stretch), 2:3.42.1-1+deb10u12 (buster)

Related CVEs :
CVE-2026-16389

Tomoya Nakanishi discovered a flaw in nss, the Mozilla Network Security
Service library, which may result in execution of arbitrary code if a
specially crafted certificate is processed.

ELA-1800-1 nss security update (by )

[SECURITY] [DSA 6430-1] postfix security update

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Debian Security Advisory DSA-6430-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 11, 2026 https://www.debian.org/security/faq
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Package : postfix
CVE ID : not yet available

Several vulnerabilities were discovered in postfix, a high-performance
mail transport agent, which could result in denial of service or policy
bypass.

For the stable distribution (trixie), these problems have been fixed in
version 3.10.13-0+deb13u1.

We recommend that you upgrade your postfix packages.

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

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 4733-1] php7.4 security update

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Debian LTS Advisory DLA-4733-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Guilhem Moulin
August 11, 2026 https://wiki.debian.org/LTS
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Package : php7.4
Version : 7.4.33-1+deb11u12
CVE ID : CVE-2026-7260 CVE-2026-17543
Debian Bug : 1143153

Security issues were found in PHP, a widely-used open source general
purpose scripting language, which could result in denial of service or
SQL injection.

CVE-2026-7260

Symbolic links in phar archives are followed without any depth limit
or cycle detection. A crafted tar-based phar archive containing
circular symbolic links could therefore cause unbounded recursion,
exhausting the C stack and crashing the PHP process.

CVE-2026-17543

Improper escaping of backslashes in attacker-provided parameters
allow for trivial SQL injection via E'…' backslash breakout.

For Debian 11 bullseye, these problems have been fixed in version
7.4.33-1+deb11u12.

We recommend that you upgrade your php7.4 packages.

For the detailed security status of php7.4 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/php7.4

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 4732-1] php8.2 security update

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Debian LTS Advisory DLA-4732-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Guilhem Moulin
August 11, 2026 https://wiki.debian.org/LTS
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Package : php8.2
Version : 8.2.33-1~deb12u1
CVE ID : CVE-2026-7260 CVE-2026-17543
Debian Bug : 1143153

Security issues were found in PHP, a widely-used open source general
purpose scripting language, which could result in denial of service or
SQL injection.

CVE-2026-7260

Symbolic links in phar archives are followed without any depth limit
or cycle detection. A crafted tar-based phar archive containing
circular symbolic links could therefore cause unbounded recursion,
exhausting the C stack and crashing the PHP process.

CVE-2026-17543

Improper escaping of backslashes in attacker-provided parameters
allow for trivial SQL injection via E'…' backslash breakout.

For Debian 12 bookworm, these problems have been fixed in version
8.2.33-1~deb12u1.

We recommend that you upgrade your php8.2 packages.

For the detailed security status of php8.2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/php8.2

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] [DSA 6431-1] openjdk-25 security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-6431-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
August 11, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : openjdk-25
CVE ID : CVE-2026-41254 CVE-2026-46917 CVE-2026-46968 CVE-2026-47010
CVE-2026-47021 CVE-2026-47027 CVE-2026-47059 CVE-2026-47063
CVE-2026-60147

Several vulnerabilities have been discovered in the OpenJDK Java runtime,
which may result in incorrect validation of certificates or signed Jar
files, denial of service or information disclosure.

For the stable distribution (trixie), these problems have been fixed in
version 25.0.4+7-1~deb13u1.

We recommend that you upgrade your openjdk-25 packages.

For the detailed security status of openjdk-25 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/openjdk-25

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 4731-1] libgd2 security update

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Debian LTS Advisory DLA-4731-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Guilhem Moulin
August 11, 2026 https://wiki.debian.org/LTS
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Package : libgd2
Version : 2.3.0-2+deb11u2 2.3.3-9+deb12u1
CVE ID : CVE-2026-9672
Debian Bug : 1143152

A vulnerability was discovered in libgd2, a library for programmatic
graphics creation and manipulation, which may result in denial of
service or potentially the execution of arbitrary code if a malformed
GIF file is processed.

For Debian 11 bullseye, this problem has been fixed in version
2.3.0-2+deb11u2.

For Debian 12 bookworm, this problem has been fixed in version
2.3.3-9+deb12u1.

We recommend that you upgrade your libgd2 packages.

For the detailed security status of libgd2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libgd2

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