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ALSA-2026:42694 — Moderate: glibc security update

Affected: AlmaLinux:10: glibc, AlmaLinux:10: glibc-all-langpacks, AlmaLinux:10: glibc-benchtests, AlmaLinux:10: glibc-common, AlmaLinux:10: glibc-devel, AlmaLinux:10: glibc-doc, AlmaLinux:10: glibc-gconv-extra, AlmaLinux:10: glibc-langpack-aa, AlmaLinux:10: glibc-langpack-af, AlmaLinux:10: glibc-langpack-agr and 211 more

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

* glibc: glibc: Information disclosure or denial of service via ungetwc function with specific wide character encodings (CVE-2026-5928) * glibc: glibc: Out-of-bounds write via TSIG record processing (CVE-2026-5435) * glibc: glibc: Application crash or uninitialized memory read via crafted DNS response (CVE-2026-6238)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-10479

BELL-CVE-2026-5435

Affected: Alpaquita:23: glibc, Alpaquita:25: glibc, Alpaquita:stream: glibc, BellSoft Hardened Containers:23: glibc, BellSoft Hardened Containers:25: glibc, BellSoft Hardened Containers:stream: glibc

BREW-glibc-CVE-2026-5435

Affected: Homebrew: glibc

certfr-2026-avi-1094 — De multiples vulnérabilités ont été découvertes dans les produits IBM. Certaines d'entre elles permettent à un attaquan…

certfr-2026-avi-1094

EUVD-2026-336369

fkie_cve-2026-5435

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

GHSA-32rw-r8mp-pw42

msrc_CVE-2026-5435 — Potential buffer overflow in ns_sprintrrf TSIG handling path

msrc_CVE-2026-5435

OESA-2026-2592 — glibc security update

Affected: openEuler:22.03-LTS-SP4: glibc

The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more. Security Fix(es):

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to validate the RDATA content against the RDATA length in a DNS response when processing LOC, CERT, TKEY or TSIG records, which may allow an attacker to craft a DNS response, causing a target application to crash or read uninitialized memory.

These functions are for application debugging only and hence not in the path of code executed by the DNS resolver. Further, they have been deprecated since version 2.34 and should not be used by any new applications. Applications should consider porting away from these interfaces since they may be removed in future versions.(CVE-2026-6238)

openSUSE-SU-2026:11140-1 — glibc-2.43-4.1 on GA media

glibc-2.43-4.1 on GA media

RHSA-2026:12740 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

glibc: glibc: Denial of Service via iconv() function with specific character sets glibc: glibc: Out-of-bounds write via TSIG record processing glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width glibc: glibc: Information disclosure or denial of service via ungetwc function with specific wide character encodings glibc: glibc: Application crash or uninitialized memory read via crafted DNS response

RLSA-2026:42694 — Moderate: glibc security update

Affected: Rocky Linux:10: glibc

Security Fix(es):

* glibc: glibc: Information disclosure or denial of service via ungetwc function with specific wide character encodings (CVE-2026-5928)

* glibc: glibc: Out-of-bounds write via TSIG record processing (CVE-2026-5435)

* glibc: glibc: Application crash or uninitialized memory read via crafted DNS response (CVE-2026-6238)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

SSA-082556 — SSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5

Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant).

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

Note: This SSA advises vulnerabilities for firmware version V3.1.5 only; for version V3.1.6 refer to SSA-019113.

SUSE-SU-2026:22453-1 — Security update for glibc

Security update for glibc

UBUNTU-CVE-2026-5435

Affected: Ubuntu:Pro:14.04:LTS: eglibc, Ubuntu:Pro:16.04:LTS: glibc, Ubuntu:Pro:18.04:LTS: glibc, Ubuntu:Pro:20.04:LTS: glibc, Ubuntu:22.04:LTS: glibc, Ubuntu:24.04:LTS: glibc, Ubuntu:25.10: glibc, Ubuntu:26.04:LTS: glibc

VDE-2026-088 — METTLER TOLEDO: LabX Standard and Enterprise Report on External Component Analysis - v21.4

The vulnerabilities found in LabX Standard versions 21.3.22 - 21.4.23 are CVE-2025-69419, CVE-2026-0915, CVE-2025-15467, CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Standard v21.4.25.

The vulnerabilities found in LabX Enterprise versions 21.3.22 - 21.4.23 are CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Enterprise v21.4.25

All other vulnerabilities are to be fixed in the upcoming releases.

WID-SEC-W-2026-1300 — GNU libc: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen.