Description
nscd: netgroup cache assumes NSS callback uses in-buffer strings
The Name Service Cache Daemon's (nscd) netgroup cache can corrupt memory
when the NSS callback does not store all strings in the provided buffer.
The flaw was introduced in glibc 2.15 when the cache was added to nscd.
This vulnerability is only present in the nscd binary.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The GNU C Library | glibc | 2.15 – < 2.40 | 2.40 |
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 | 2.37-19 | — |
| Debian 13 | glibc | 2.37-19 | — |
| Debian 12 | glibc | 2.36-9+deb12u7 | DSA-5678-1 |
| Debian 11 | glibc | 2.31-13+deb11u10 | DSA-5678-1 |
| Debian 10 | glibc | 2.28-10+deb10u4 | DLA-3850-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | glibc | 2.39-0ubuntu8.2 | USN-6804-1 |
| Ubuntu 22.04 LTS | glibc | 2.35-0ubuntu3.8 | USN-6804-1 |
| Ubuntu 20.04 LTS | glibc | 2.31-0ubuntu9.16 | USN-6804-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | glibc | 2.27-3ubuntu1.6+esm3 | USN-6804-1 |
| Ubuntu Pro 16.04 LTS | glibc | 2.23-0ubuntu11.3+esm7 | USN-6804-1 |
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | nscd +214 | 2.34-100.el9_4.2 | RHSA-2024:3339 |
| RHEL 8 | nscd +213 | 2.28-251.el8_10.2 | RHSA-2024:3344 |
| RHEL 7 | nscd +7 | 2.17-326.el7_9.3 | RHSA-2024:3588 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | glibc-devel +1 | 2.28-189.10.el8_6 | RHSA-2024:2799 |
| RHEL 9.2 EUS | nscd +214 | 2.34-60.el9_2.14 | RHSA-2024:3411 |
| RHEL 9.0 EUS | nscd +214 | 2.34-28.el9_0.6 | RHSA-2024:3423 |
| RHEL 8.8 EUS | nscd +213 | 2.28-225.el8_8.11 | RHSA-2024:3312 |
| RHEL 8.6 EUS | nscd +213 | 2.28-189.10.el8_6 | RHSA-2024:2799 |
| RHEL 8.4 TUS | glibc-utils +2 | 2.28-151.el8_4.2 | RHSA-2024:3309 |
| RHEL 8.4 E4S | glibc +180 | 2.28-151.el8_4.2 | RHSA-2024:3309 |
| RHEL 8.4 AUS | nscd +208 | 2.28-151.el8_4.2 | RHSA-2024:3309 |
| RHEL 8.2 AUS | nscd +208 | 2.28-101.el8_2.2 | RHSA-2024:3464 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | nscd +214 | 2.34-100.el9_4.2 | ALSA-2024:3339 |
| AlmaLinux 8 | nscd +213 | 2.28-251.el8_10.2 | ALSA-2024:3344 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | glibc | 2.34-100.el9_4.2 | RLSA-2024:3339 |
| Rocky Linux 8 | glibc | 2.28-251.el8_10.2 | RLSA-2024:3344 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLES 15 SP4 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLES 15 SP3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLES 15 SP2 | glibc | 2.26-150000.13.73.1 | SUSE-SU-2024:1977-1 |
| SLES 12 SP5 | glibc | 2.22-114.34.1 | SUSE-SU-2024:1675-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLES for SAP 15 SP3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLES for SAP 15 SP2 | glibc | 2.26-150000.13.73.1 | SUSE-SU-2024:1977-1 |
| SLES for SAP 12 SP5 | glibc | 2.22-114.34.1 | SUSE-SU-2024:1675-1 |
| SLE Micro 6.0 | glibc | 2.38-7.1 | SUSE-SU-2025:20038-1 |
| SLE Micro 5.5 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-2, SUSE-SU-2024:1895-1 |
| SLE Micro 5.4 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE Micro 5.3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE Micro 5.2 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE Micro 5.1 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE HPC 15 SP4 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE HPC 15 SP3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SLE HPC 15 SP2 | glibc | 2.26-150000.13.73.1 | SUSE-SU-2024:1977-1 |
| SUSE Manager Server 4.3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SUSE Manager Proxy 4.3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| SUSE Enterprise Storage 7.1 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.39-7.1 | openSUSE-SU-2024:13991-1 |
| openSUSE Leap 15.5 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
| openSUSE Leap Micro 5.3 | glibc | 2.31-150300.83.1 | SUSE-SU-2024:1895-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | nscd +217 | 2.34-181.amzn2023.0.1 | ALAS2023-2025-988 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | glibc | 2.35-7 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | nscd +214 | 2.34-100.0.1.el9_4.2 | ELSA-2024-3339 |
| Oracle Linux 8 | nscd +213 | 2.28-251.0.2.el8_10.2 | ELSA-2024-3344 |
| Oracle Linux 7 | nscd +6 | 2.17-326.0.9.el7_9.3 | ELSA-2024-3588 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | glibc | 2.39-r5 | — |
Advisories 39
- ALSA-2024:3339 Important: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3344 Important: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:3588 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3464 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3423 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3411 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3339 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3312 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:3309 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:2799 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-082556 SSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2024-0974 GNU libc: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 1, 2026
- RHSA-2024:3344 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Aug 18, 2026
- WID-SEC-2025-0148 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- WID-SEC-2024-3195 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- USN-6804-1 glibc vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- ICSA-25-162-05 Siemens SIMATIC S7-1500 CPU family CISA ICS & IT advisories · May 14, 2026
- WID-SEC-2024-1226 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- SUSE-SU-2025:20038-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-5678-1 glibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3850-1 glibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:3339 Important: glibc security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:3344 Important: glibc security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2024:1977-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1675-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1895-2 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1895-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13991-1 glibc-2.39-7.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0225 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2025
- WID-SEC-2025-0794 Juniper Junos Space: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 4, 2025
- NCSC-2025-0187 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Jun 10, 2025
- ALAS2023-2025-988 Moderate: glibc security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 2, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- NCSC-2025-0021 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Jan 22, 2025
- NCSC-2025-0020 Kwetsbaarheden verholpen in Oracle Database producten NCSC-NL (Netherlands) · Jan 22, 2025
- NCSC-2024-0414 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Oct 17, 2024
- ELSA-2024-3588 Important: glibc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 5, 2024
- ELSA-2024-3339 Important: glibc security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 29, 2024
- ELSA-2024-3344 Important: glibc security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 29, 2024