Description
The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | glibc | 2.33-3 | — |
| Debian 13 | glibc | 2.33-3 | — |
| Debian 12 | glibc | 2.33-3 | — |
| Debian 10 | glibc | 2.28-10+deb10u2 | DLA-3152-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | glibc | 2.31-0ubuntu9.7 | USN-5310-1 |
| Ubuntu 18.04 LTS | glibc | 2.27-3ubuntu1.5 | USN-5310-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | glibc | 2.23-0ubuntu11.3+esm1 | USN-5310-2 |
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | nscd +212 | 2.28-164.el8_5.3 | RHSA-2022:0896 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | nss_hesiod +5 | 2.28-164.el8_5.3 | ALSA-2022:0896 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | glibc | 2.28-164.el8_5.3 | RLSA-2022:0896 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | glibc | 2.31-150300.9.12.1 | SUSE-SU-2022:0330-1 |
| SLES 15 SP2 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES 15 SP1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES 15 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES 12 SP5 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
Show 27 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
| SLES 12 SP3 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SLES 12 SP2 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SLES 11 SP4 | glibc | 2.11.3-17.110.40.1 | SUSE-SU-2022:14923-1 |
| SLES for SAP 15 SP2 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES for SAP 15 SP1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES for SAP 15 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLES for SAP 12 SP5 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
| SLES for SAP 12 SP4 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
| SLES for SAP 12 SP3 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SLE Real Time 15 SP2 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLE Micro 5.1 | glibc | 2.31-150300.9.12.1 | SUSE-SU-2022:0330-1 |
| SLE Micro 5.0 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLE HPC 15 SP2 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLE HPC 15 SP1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SLE HPC 15 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SUSE OpenStack Cloud Crowbar 9 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
| SUSE OpenStack Cloud Crowbar 8 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SUSE OpenStack Cloud 9 | glibc | 2.22-114.19.1 | SUSE-SU-2022:0441-1 |
| SUSE OpenStack Cloud 8 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SUSE Manager Server 4.1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SUSE Manager Retail Branch Server 4.1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SUSE Manager Proxy 4.1 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | glibc | 2.11.3-17.110.40.1 | SUSE-SU-2022:14923-1 |
| SUSE HPE Helion OpenStack 8 | glibc | 2.22-119.1 | SUSE-SU-2022:0909-1 |
| SUSE Enterprise Storage 7 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
| SUSE Enterprise Storage 6 | glibc | 2.26-13.65.1 | SUSE-SU-2022:0832-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.35-1.1 | openSUSE-SU-2024:11850-1 |
| openSUSE Leap 15.3 | glibc | 2.31-150300.9.12.1 | openSUSE-SU-2022:0330-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | nscd +218 | 2.34-52.amzn2023.0.2 | ALAS2023-2023-060 |
| Amazon Linux 2 | nscd +199 | 2.26-58.amzn2 | ALAS2-2022-1767 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | glibc | 2.35-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | nscd +211 | 2.28-164.0.5.el8_5.3 | ELSA-2022-0896 |
| Oracle Linux 7 | nscd +6 | 2.17-325.0.6.el7_9 | ELSA-2022-9358 |
Advisories 27
- ALSA-2022:0896 Moderate: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- RHSA-2022:0896 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Aug 27, 2026
- USN-5310-2 glibc vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-5310-1 glibc vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3152-1 glibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:0896 Moderate: glibc security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2022:14923-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0330-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0330-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0909-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0832-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0441-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1220 GNU libc: Mehrere Schwachstellen ermöglichen Codeausführung und Denial of Service BSI CERT-Bund (WID) · Oct 15, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- openSUSE-SU-2024:11850-1 glibc-2.35-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ICSA-23-166-10 Siemens SIMATIC S7-1500 TM MFP BIOS CISA ICS & IT advisories · Apr 9, 2024
- SSA-831302 SSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0 Siemens ProductCERT · Apr 9, 2024
- ICSA-23-320-13 Siemens SIMATIC MV500 CISA ICS & IT advisories · Nov 14, 2023
- SSA-099606 SSA-099606: Multiple Vulnerabilities in SIMATIC MV500 before V3.3.5 Siemens ProductCERT · Nov 14, 2023
- WID-SEC-2023-1969 HPE Fabric OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Aug 6, 2023
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
- ALAS2023-2023-060 Moderate: glibc security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
- WID-SEC-2023-0120 Oracle Systems: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 17, 2023
- ELSA-2022-9358 Important: glibc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 18, 2022
- ALAS2-2022-1767 Moderate: glibc security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 6, 2022
- ELSA-2022-0896 Moderate: glibc security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 16, 2022