Description
Multiple stack-based buffer overflows in the GNU C Library (aka glibc or libc6) before 2.23 allow context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long argument to the (1) nan, (2) nanf, or (3) nanl function.
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 | 2.23-1 | — |
| Debian 13 | glibc | 2.23-1 | — |
| Debian 12 | glibc | 2.23-1 | — |
| Debian 6.0 | eglibc | 2.11.3-4+deb6u9 | DLA-411-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | eglibc | 2.19-0ubuntu6.8 | USN-2985-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nscd +7 | 2.17-196.el7 | RHSA-2017:1916 |
| RHEL 6 | nscd +7 | 2.12-1.209.el6 | RHSA-2017:0680 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | glibc | 2.19-35.1 | SUSE-SU-2016:0471-1 |
| SLES 12 | glibc | 2.19-22.13.1 | SUSE-SU-2016:0473-1 |
| SLES 11 SP4 | glibc | 2.11.3-17.95.2 | SUSE-SU-2016:0472-1 |
| SLES 11 SP3 | glibc | 2.11.3-17.95.2 | SUSE-SU-2016:0472-1 |
| SLES 11 SP2 | glibc | 2.11.3-17.45.66.1 | SUSE-SU-2016:0470-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | glibc | 2.19-35.1 | SUSE-SU-2016:0471-1 |
| SLES for SAP 12 | glibc | 2.19-22.13.1 | SUSE-SU-2016:0473-1 |
| SLES for SAP 11 SP4 | glibc | 2.11.3-17.95.2 | SUSE-SU-2016:0472-1 |
| SLES for SAP 11 SP3 | glibc | 2.11.3-17.95.2 | SUSE-SU-2016:0472-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.24-2.3 | openSUSE-SU-2024:10154-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nscd +6 | 2.17-196.el7 | ELSA-2017-1916 |
Advisories 12
- RHSA-2017:1916 Red Hat Security Advisory: glibc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:0680 Red Hat Security Advisory: glibc security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2985-1 eglibc, glibc vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-411-1 eglibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:0472-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0473-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0471-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0470-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10154-1 glibc-2.24-2.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0974 GNU libc: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 16, 2023
- VDE-2019-013 WAGO: Multiple Vulnerabilities in industrial managed switches CERT@VDE · Jun 12, 2019
- ELSA-2017-1916 Moderate: glibc security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
References
- SUSE-SU-2016:0471 vendor-advisory
- FEDORA-2016-68abc0be35 vendor-advisory
- RHSA-2017:1916 vendor-advisory
- openSUSE-SU-2016:0510 vendor-advisory
- SUSE-SU-2016:0470 vendor-advisory
- RHSA-2017:0680 vendor-advisory
- USN-2985-2 vendor-advisory
- [oss-security] 20160119 Re: CVE assignment request for security bugs fixed in glibc 2.23 mailing-list
- GLSA-201702-11 vendor-advisory
- SUSE-SU-2016:0472 vendor-advisory
- SUSE-SU-2016:0473 vendor-advisory
- [libc-alpha] 20160219 The GNU C Library version 2.23 is now available mailing-list
- [oss-security] 20160119 CVE assignment request for security bugs fixed in glibc 2.23 mailing-list
- 83306 vdb-entry
- USN-2985-1 vendor-advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=16962
- 20190612 SEC Consult SA-20190612-0 :: Multiple vulnerabilities in WAGO 852 Industrial Managed Switch Series mailing-list
- 20190613 SEC Consult SA-20190612-0 :: Multiple vulnerabilities in WAGO 852 Industrial Managed Switch Series mailing-list
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X mailing-list
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X mailing-list
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html