CVE-2023-4911

CISA KEV

ACT NOW Priority: 0.00 BB Relevance: 10/100

Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

CISA Known Exploited Vulnerability

Vendor / Product GNU — GNU C Library

Date Added 2023-11-21

Remediation Due 2023-12-12

This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa, https://access.redhat.com/security/cve/cve-2023-4911, https://www.debian.org/security/2023/dsa-5514 ; https://nvd.nist.gov/vuln/detail/CVE-2023-4911

Weakness Classification (2)

CWE-122 CWE-787

Affected Software (73)

Vendor	Product	Version
canonical	ubuntu_linux	22.04
canonical	ubuntu_linux	23.04
debian	debian_linux	11.0
debian	debian_linux	12.0
fedoraproject	fedora	37
fedoraproject	fedora	38
fedoraproject	fedora	39
gnu	glibc	2.34 – 2.39
netapp	bootstrap_os	-
netapp	h300s_firmware	-
netapp	h410c_firmware	-
netapp	h410s_firmware	-
netapp	h500s_firmware	-
netapp	h700s_firmware	-
netapp	ontap_select_deploy_administration_utility	-
redhat	codeready_linux_builder	9.0
redhat	codeready_linux_builder_eus	8.6
redhat	codeready_linux_builder_eus	9.2
redhat	codeready_linux_builder_eus	9.4
redhat	codeready_linux_builder_eus	9.6
redhat	codeready_linux_builder_for_arm64	9.0_aarch64
redhat	codeready_linux_builder_for_arm64_eus	8.6
redhat	codeready_linux_builder_for_arm64_eus	9.2_aarch64
redhat	codeready_linux_builder_for_arm64_eus	9.4_aarch64
redhat	codeready_linux_builder_for_arm64_eus	9.6_aarch64
redhat	codeready_linux_builder_for_ibm_z_systems	9.0_s390x
redhat	codeready_linux_builder_for_ibm_z_systems_eus	8.6
redhat	codeready_linux_builder_for_ibm_z_systems_eus	9.2_s390x
redhat	codeready_linux_builder_for_ibm_z_systems_eus	9.4_s390x
redhat	codeready_linux_builder_for_ibm_z_systems_eus	9.6_s390x