CVE-2026-8674

A assertion failure in the DNS stub resolver of the GNU C Library (glibc) versions 2.26 through 2.44 aborts any process that resolves names through the library. The root cause is that when the search list in /etc/resolv.conf or the LOCALDOMAIN environment variable contains a domain of roughly 200...

CVE-2026-8674 Assertion failure in the DNS stub resolver with a long search domain

Initializing the DNS stub resolver from an /etc/resolv.conf file, or a LOCALDOMAIN environment variable, whose search list contains a domain of roughly 200 characters or more in the GNU C Library version 2.26 to 2.44 results in an assertion failure which aborts the process. The resolver truncates...

CVE-2026-80489

CVE-2026-80489 affects the GNU C Library (glibc) versions 2.3 through 2.44 . The defect resides in the iconv converter for the EUC_JISX0213 character set when converting to UCS-4 or the internal wide-character encoding. Certain EUC_JISX0213 sequences decode to two code points; if the output buffe...

CVE-2026-80489 EUC_JISX0213 decoding may hang on crafted input

Converting crafted EUCJISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calling application to hang. Some EUCJISX0213 sequences decode to two code points. If...

CVE-2026-77117

CVE-2026-77117 affects the GNU C Library (glibc) versions 2.3 through 2.44 in the SHIFT_JISX0213 to UCS-4 converter used by iconv. Some SHIFT_JISX0213 sequences decode to two code points; if the output buffer can hold only the first, the converter stores the second in its conversion state and ret...

CVE-2026-19542

Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may write one pointer past the end of an alloca-allocated array on the stack, which may crash the application. The tdelete implementation keeps an explicit stack of parent nodes for rebalancing, which is grown as...

CVE-2026-19542 Stack-based out-of-bounds write in tdelete during tree rebalancing

Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may write one pointer past the end of an alloca-allocated array on the stack, which may crash the application. The tdelete implementation keeps an explicit stack of parent nodes for rebalancing, which is grown as...

EUVD-2026-77685

Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may write one pointer past the end of an alloca-allocated array on the stack, which may crash the application. The tdelete implementation keeps an explicit stack of parent nodes for rebalancing, which is grown as...

CVE-2026-19542

CVE-2026-19542 is a stack-based out-of-bounds write in the tdelete function of the GNU C Library (glibc) versions 2.1 through 2.44. The root cause is that two rebalancing branches in tdelete push an entry onto an alloca-allocated parent-node stack without checking capacity, writing one pointer pa...

EUVD-2026-77675

Calling strfmon and strfmonl 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 strfmonl with right-justified width padding...

CVE-2026-19499 Buffer overflow in strfmon and strfmon_l right-justification padding

Calling strfmon and strfmonl 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 strfmonl with right-justified width padding...

OESA-2026-3795 glibc security update

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...

OESA-2026-3793 glibc security update

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...

Astra Linux – Vulnerability in glibc

The iconv feature in the GNU C Library also known as glibc or libc6, up to version 2.32, may have a buffer over-read issue when processing invalid multi-byte input sequences in the EUC-KR encoding...

Astra Linux – Vulnerability in glibc

The Name Service Cache Daemon’s nscd netgroup cache can corrupt memory when the NSS callback does not store all strings in the provided buffer. This flaw was introduced in glibc 2.15, when the cache was added to nscd. This vulnerability only exists in the nscd binary...

CVE-2023-4911-Lab

CVE-2023-4911 "Looney Tunables" Analysis Environment Docker-based practice environment for analyzing and developing exploits for the GNU C Library glibc dynamic loader buffer overflow vulnerability Local Privilege Escalation. CVE Information Item| Content ---|--- CVE Number| CVE-2023-4911 Alias|...

CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

AZL-100019 CVE-2026-89092 affecting package glibc 2.38-21

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

EUVD-2026-75897

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...