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: Process abort due to invalid memory in wordexp (CVE-2026-6368) * glibc: Denial of Service via stack exhaustion during tilde expansion (CVE-2026-6791) * glibc: Buffer Overflow in strfmon right-justification padding (CVE-2026-19499) * glibc: Fix out-of-bounds array write in tdelete (CVE-2026-19542)

Bug Fix(es) and Enhancement(s):

* The iconv utility no longer returns exit status 1 after a successful //TRANSLIT transliteration * A counter overflow in __wcsmbs_clone_conv that occurred when setlocale was called has been fixed * A fcntl.h header conflict when compiling on AlmaLinux 10 has been resolved * Minor documentation improvements have been picked up from upstream

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.

Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding.

Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller.

At the time of publication, no network-facing application impact is known.

Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding.

Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller.

At the time of publication, no network-facing application impact is known.

Affected: openEuler:24.03-LTS-SP1: 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):

A flaw was found in glibc. The strfmon and strfmon_l functions are vulnerable to a buffer overflow when processing right-justified width padding. This occurs because an incorrect length is used for an internal memory operation, causing data to be written beyond its intended buffer. An attacker could exploit this by providing specially crafted input, potentially leading to arbitrary code execution or other severe impacts.(CVE-2026-19499)

A flaw was found in glibc. A remote attacker could exploit this vulnerability by providing specially crafted input during SHIFT_JISX0213 to UCS-4 text conversion. This crafted input can cause the application to repeatedly emit a buffered code point without consuming further input, leading to persistent retry churn. This can result in a denial of service (DoS) for callers converting untrusted text.(CVE-2026-77117)

A flaw was found in glibc. This vulnerability allows a remote attacker to cause a denial of service (DoS) by providing specially crafted text to an application that converts text from SHIFT_JISX0213 to UCS…

glibc-2.44-2.1 on GA media

glibc: Buffer Overflow in strfmon right-justification padding

Security update for glibc

Affected: Ubuntu:24.04:LTS: glibc, Ubuntu:26.04:LTS: glibc

Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding. Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller. At the time of publication, no network-facing application impact is known.

Ein Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode auszuführen, vertrauliche Informationen offenzulegen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen oder andere, nicht näher bezeichnete Angriffe durchzuführen.