CVE-2023-4911

PoC of CVE-2023-4911 "Looney Tunables" This is a PoC of CVE-2023-4911 a.k.a. "Looney Tunables" exploiting a bug in glibc dynamic loader's GLIBCTUNABLES environment variable parsing function parsetunables. Code has been tested on Ubuntu 22.04.3 with glibc version 2.35-0ubuntu3.3. No attempts have...

CVE-2023-4911

CVE-2023-4911 This is a PoC for CVE-2023-4911 "Looney Tunables" that exploits a bug in the glibc dynamic loader's GLIBCTUNABLES environment variable parsing function parsetunables. This is a rewrite of the C PoC's into a pure python approach. I did this to make it easier to customize the exploit...

CVE-2023-4911-PoC

GNU C Library's Dynamic Loader Vulnerability CVE-2023-4911 Overview The GNU C Library glibc serves as the C library in the GNU system and is integral to Linux-based systems. At its core, glibc defines essential functionalities for programs, including system calls and common functions like open,...

CVE-2023-4911

glibc Heap Buffer Overflow Vulnerability CVE-2023-4911 Item| Description ---|--- CVE ID| CVE-2023-4911 Attack Type| Heap Buffer Overflow → Local Privilege Escalation CVSS 3.1| 7.8 High Disclosure Date| 2023-10-03 Vulnerability Point| glibc dynamic loader ld.so GLIBCTUNABLES parser Affected...

SUSE SLES11: glibc / glibc-32bit / glibc-devel / glibc-devel-32bit / glibc-html / etc (SUSE-SU-2026:4669-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:4669-1 advisory. This update for glibc fixes the following issue: - CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate...

Security update for glibc

This update for glibc fixes the following issue: CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate privileges bsc1282509. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper...

SUSE-SU-2026:4669-1 Security update for glibc

This update for glibc fixes the following issue: - CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate privileges bsc1282509...

Security update for glibc

This update for glibc fixes the following issues: CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate privileges bsc1282509. CVE-2026-89092: nscd stack overflow leads to degraded DNS resolution bsc1282449. Patch Instructions: To install this SUSE update...

SUSE-SU-2026:4654-1 Security update for glibc

This update for glibc fixes the following issues: - CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate privileges bsc1282509. - CVE-2026-89092: nscd stack overflow leads to degraded DNS resolution bsc1282449...

SUSE-SU-2026:4591-1 Security update for glibc

This update for glibc fixes the following issues: - CVE-2026-6368: wordexp WRDEAPPEND rollback restores stale wewordv, leading to invalid free in wordfree bsc1274726. - CVE-2026-6791: wordexp: unbounded alloca strndupa in parsetilde bsc1274723. - CVE-2026-8674: reachable assert in...

OESA-2026-4155 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-2026-4154 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...

SUSE-SU-2026:23934-1 Security update for glibc

This update for glibc fixes the following issues: - CVE-2026-6368: invalid free via wordexp WRDEAPPEND rollback bsc1274726. - CVE-2026-6791: stack overflow in wordexp tilde expansion bsc1274723. - CVE-2026-8674: reachable assert in resolv/resolvconf.c:updatefromconf allows an attacker in a local...

glibc: glibc: Local attacker can cause denial of service and information disclosure via stack-based buffer overflow.

A flaw was found in glibc, the GNU C Library. A local attacker can exploit a stack-based buffer overflow in the dynamic loader ld.so when a setuid/setgid ATSECURE program's DTRPATH or DTRUNPATH begins with $ORIGIN followed by a null character or a slash. This vulnerability allows the attacker to...

CVE-2026-95818

A flaw was found in glibc, the GNU C Library. A local attacker can exploit a stack-based buffer overflow in the dynamic loader ld.so when a setuid/setgid ATSECURE program's DTRPATH or DTRUNPATH begins with $ORIGIN followed by a null character or a slash. This vulnerability allows the attacker to...

CVE-2026-95818

A stack-based buffer overflow in the dynamic loader ld.so of the GNU C Library glibc versions 2.14 through 2.44 allows a local attacker to crash or corrupt the memory of setuid/setgid ATSECURE programs. When such a program's DTRPATH or DTRUNPATH begins with $ORIGIN and is followed by NUL or '/' t...

CVE-2026-86805

A time-of-check to time-of-use TOCTOU race condition in the dynamic loader ld.so of the GNU C Library glibc versions 2.14 through 2.44 allows a local attacker to escalate privileges. When expanding $ORIGIN in DTRPATH for setuid/setgid ATSECURE programs, glibc validates the lexically normalized...

PT-2026-96840

Name of the Vulnerable Software and Affected Versions glibc versions 2.14 through 2.44 Description A stack-based buffer overflow exists in the dynamic loader ld.so of the GNU C Library. This issue occurs when a setuid/setgid AT SECURE program has a DT RPATH or DT RUNPATH that starts with $ORIGIN...

PT-2026-104833

A time-of-check to time-of-use TOCTOU race condition in the dynamic loader ld.so of the GNU C Library glibc versions 2.14 through 2.44 allows a local attacker to escalate privileges. When expanding $ORIGIN in DT RPATH for setuid/setgid AT SECURE programs, glibc validates the lexically normalized...

PT-2026-96830

Name of the Vulnerable Software and Affected Versions glibc versions 2.14 through 2.44 Description A time-of-check to time-of-use TOCTOU race condition exists in the dynamic loader ld.so. This occurs when expanding $ORIGIN in DT RPATH for setuid/setgid AT SECURE programs; the system validates the...