Description
nscd in the GNU C Library (aka glibc or libc6) before version 2.20 does not correctly compute the size of an internal buffer when processing netgroup requests, possibly leading to an nscd daemon crash or code execution as the user running nscd.
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 | 2.19-14 | — |
| Debian 13 | glibc | 2.19-14 | — |
| Debian 12 | glibc | 2.19-14 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | glibc | 2.27-3ubuntu1.6+esm2 | USN-6762-1 |
| Ubuntu Pro 16.04 LTS | glibc | 2.23-0ubuntu11.3+esm6 | USN-6762-1 |
| Ubuntu Pro 14.04 LTS | eglibc | 2.19-0ubuntu6.15+esm3 | USN-6762-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | glibc | 2.19-22.24.5 | SUSE-SU-2018:0076-1 |
Advisories 4
- USN-6762-1 eglibc, glibc vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- SUSE-SU-2018:0076-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1478 GNU libc: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 2, 2024
- VDE-2019-013 WAGO: Multiple Vulnerabilities in industrial managed switches CERT@VDE · Jun 12, 2019
References
- https://sourceware.org/bugzilla/show_bug.cgi?id=16695
- 99071 vdb-entry
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=c44496df2f090a56d3bf75df930592dac6bba46f
- 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