CVE catalog
CVE-2023-4911
glibc: CVE-2023-4911
- Severity
- High · CVSS 8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- Exploitation
- CISA Known Exploited Vulnerabilities
- EPSS
- 63.77% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | glibc | sid | 2.43-7 | fixed |
| Debian | glibc | forky | 2.43-7 | fixed |
| Debian | glibc | trixie | 2.41-12+deb13u4 | fixed |
| Debian | glibc | bookworm | 2.36-9+deb12u14 | fixed |
| Debian | glibc | bookworm-security | 2.36-9+deb12u7 | fixed |
| Cpe | bootstrap_os | Not reported | Not reported | unknown |
| Cpe | simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | Not reported | Not reported | unknown |
| Cpe | simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware | Not reported | Not reported | unknown |
| Cpe | siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | Not reported | Not reported | unknown |
| Cpe | simatic_s7-1500_tm_mfp_firmware | Not reported | 1.1 | fixed |
| Cpe | glibc | Not reported | 2.39 | fixed |
| Cpe | fedora | Not reported | Not reported | unknown |
| Cpe | codeready_linux_builder | Not reported | Not reported | unknown |
| Cpe | codeready_linux_builder_eus | Not reported | Not reported | unknown |
| Cpe | codeready_linux_builder_for_arm64 | Not reported | Not reported | unknown |
| Cpe | codeready_linux_builder_for_arm64_eus | Not reported | Not reported | unknown |
| Cpe | codeready_linux_builder_for_ibm_z_systems | Not reported | Not reported | unknown |
| Ubuntu | glibc | 22.04 | 2.34-0ubuntu3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu1 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.1 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.4 | fixed |
| Ubuntu | glibc | 24.04 | 2.38-1ubuntu6 | fixed |
| Ubuntu | glibc | 22.04 | 2.34-0ubuntu3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu1 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.1 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.3 | vulnerable |
| Ubuntu | glibc | 22.04 | 2.35-0ubuntu3.4 | fixed |
| Opensuse | glibc | tumbleweed | 2.38-4.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | glibc | source | sid | 2.37-12 | not yet assigned | Not reported | Not reported |
| Debian | glibc | source | forky | 2.37-12 | not yet assigned | Not reported | Not reported |
| Debian | glibc | source | trixie | 2.37-12 | not yet assigned | Not reported | Not reported |
| Debian | glibc | source | bookworm | 2.36-9+deb12u3 | not yet assigned | Not reported | Not reported |
| Cpe | simatic_s7-1500_tm_mfp_firmware | cpe | Not reported | 1.1 | Not reported | NVD-CVE-2023-4911 | Not reported |
| Cpe | glibc | cpe | Not reported | 2.39 | Not reported | NVD-CVE-2023-4911 | Not reported |
| Ubuntu | glibc | deb | 22.04 | 2.35-0ubuntu3.4 | Not reported | UBUNTU-CVE-2023-4911 | Not reported |
| Ubuntu | glibc | deb | 24.04 | 2.38-1ubuntu6 | Not reported | UBUNTU-CVE-2023-4911 | Not reported |
| Ubuntu | glibc | deb | 22.04 | 2.35-0ubuntu3.4 | Not reported | USN-6409-1 | Not reported |
| Opensuse | glibc | rpm | tumbleweed | 2.38-4.1 | Not reported | OPENSUSE-SU-2024:13294-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-831302.json]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_5455.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2023-4911]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-4911]
- [https://osv.dev/vulnerability/DSA-5514-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-4911]
- [https://osv.dev/vulnerability/USN-6409-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13294-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-4911]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-4911.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0106.json]
- [https://www.cisa.gov/known-exploited-vulnerabilities-catalog]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [CISA Known Exploited Vulnerabilities (OSINT)] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]