Description
Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The GNU C Library | glibc | 2.0 – ≤ 2.42 | — |
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 | 2.42-8 | — |
| Debian 13 | glibc | 2.41-12+deb13u2 | — |
| Debian 12 | glibc | 2.36-9+deb12u14 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | glibc | 2.42-2ubuntu5 | — |
| Ubuntu 25.10 | glibc | 2.42-0ubuntu3.1 | — |
| Ubuntu 24.04 LTS | glibc | 2.39-0ubuntu8.7 | — |
| Ubuntu 22.04 LTS | glibc | 2.35-0ubuntu3.13 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | glibc | 2.31-0ubuntu9.18+esm1 | — |
| Ubuntu Pro 18.04 LTS | glibc | 2.27-3ubuntu1.6+esm6 | — |
| Ubuntu Pro 16.04 LTS | glibc | 2.23-0ubuntu11.3+esm9 | — |
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | glibc +220 | 2.39-58.el10_1.7 | RHSA-2026:1334 |
| RHEL 9 | glibc +1 | 2.34-231.el9_7.10 | RHSA-2026:2786 |
| RHEL 8 | nscd +213 | 2.28-251.el8_10.31 | RHSA-2026:4772 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | glibc +223 | 2.42-11.1.hum1 | RHSA-2026:7316 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | glibc-doc | 2.39-58.el10_1.7.alma.1 | ALSA-2026:1334 |
| AlmaLinux 9 | nscd +214 | 2.34-231.el9_7.10 | ALSA-2026:2786 |
| AlmaLinux 8 | nscd +94 | 2.28-251.el8_10.31 | ALSA-2026:4772 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | glibc | 2.39-58.el10_1.7 | RLSA-2026:1334 |
| Rocky Linux 9 | glibc | 2.34-231.el9_7.10 | RLSA-2026:2786 |
| Rocky Linux 8 | glibc | 2.28-251.el8_10.31 | RLSA-2026:4772 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glibc | 2.38-150600.14.40.1 | SUSE-SU-2026:0371-1 |
| SLES 15 SP6 | glibc | 2.38-150600.14.40.1 | SUSE-SU-2026:0371-1 |
| SLES 15 SP5 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLES 15 SP4 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLES 12 SP5 | glibc | 2.22-114.43.1 | SUSE-SU-2026:0680-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | glibc | 2.40-160000.3.1 | SUSE-SU-2026:20198-1 |
| SLES for SAP 15 SP6 | glibc | 2.38-150600.14.40.1 | SUSE-SU-2026:0371-1 |
| SLES for SAP 15 SP5 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLES for SAP 15 SP4 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLES 16.0 | glibc | 2.40-160000.3.1 | SUSE-SU-2026:20198-1 |
| SLE Micro 6.2 | glibc | 2.40-160000.3.1 | SUSE-SU-2026:20563-1, SUSE-SU-2026:20178-1 |
| SLE Micro 6.1 | glibc | 2.38-slfo.1.1_6.1 | SUSE-SU-2026:20536-1 |
| SLE Micro 6.0 | glibc | 2.38-11.1 | SUSE-SU-2026:20527-1 |
| SLE Micro 5.5 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLE Micro 5.4 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLE Micro 5.3 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLE Micro 5.2 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLE HPC 15 SP5 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
| SLE HPC 15 SP4 | glibc | 2.31-150300.98.1 | SUSE-SU-2026:0896-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.43-1.1 | openSUSE-SU-2026:10662-1 |
| openSUSE Leap 16.0 | glibc +4 | 2.40-160000.3.1 | openSUSE-SU-2026:20133-1 |
| openSUSE Leap 15.6 | glibc | 2.38-150600.14.40.1 | SUSE-SU-2026:0371-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | glibc | 2.38-18 | — |
| Azure Linux 2 (CBL-Mariner) | glibc | 2.35-9 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | glibc +220 | 2.39-58.0.1.el10_1.7 | ELSA-2026-1334 |
| Oracle Linux 9 | nscd +214 | 2.34-231.0.1.el9_7.10 | ELSA-2026-2786 |
| Oracle Linux 8 | nscd +213 | 2.28-251.0.4.el8_10.31 | ELSA-2026-4772 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | glibc | 2.42-r6 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
Terra-Nova83/CVE-2026-0915-json-Patch.-V2.0 ★ 0 · Feb 18, 2026
Patch the Bug - glibc
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 30
- WID-SEC-2026-2189 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:1334 Moderate: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:2786 Moderate: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:4772 Moderate: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-1007 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2026
- RHSA-2026:7316 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:4772 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:2786 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:1334 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- VDE-2026-088 METTLER TOLEDO: LabX Standard and Enterprise Report on External Component Analysis - v21.4 CERT@VDE · Sep 10, 2026
- WID-SEC-2026-0132 GNU libc: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Sep 3, 2026
- WID-SEC-2026-3038 Meinberg LANTIME: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 26, 2026
- SUSE-SU-2026:20563-1 Security update for glibc SUSE / openSUSE Security Updates · Jul 9, 2026
- VDE-2026-064 METTLER TOLEDO: LabX Standard Report on External Component Analysis - v21.3 CERT@VDE · Jun 9, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- openSUSE-SU-2026:10662-1 glibc-2.43-1.1 on GA media SUSE / openSUSE Security Updates · May 1, 2026
- RLSA-2026:4772 Moderate: glibc security update Rocky Linux Security Advisories · Mar 24, 2026
- openSUSE-SU-2026:20133-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20527-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20198-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20178-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0680-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 23, 2026
- ELSA-2026-4772 Moderate: glibc security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 19, 2026
- SUSE-SU-2026:0896-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 14, 2026
- SUSE-SU-2026:20536-1 Security update for glibc SUSE / openSUSE Security Updates · Mar 4, 2026
- RLSA-2026:2786 Moderate: glibc security update Rocky Linux Security Advisories · Feb 24, 2026
- ELSA-2026-2786 Moderate: glibc security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 17, 2026
- SUSE-SU-2026:0371-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2026:1334 Moderate: glibc security update Rocky Linux Security Advisories · Jan 30, 2026
- ELSA-2026-1334 Moderate: glibc security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jan 27, 2026