Description
Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| glibc | glibc | 1.93-260 – < 2.43 | 2.43 |
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 | 2.43-4 | — |
| Debian 13 | glibc | No fix yet | — |
| Debian 12 | glibc | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | glibc | 2.43-2ubuntu2.4 | USN-8737-1 |
| Ubuntu 24.04 LTS | glibc | 2.39-0ubuntu8.9 | USN-8737-2 |
| Ubuntu 22.04 LTS | glibc | 2.35-0ubuntu3.15 | USN-8737-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | glibc | No fix yet | — |
| Ubuntu Pro 18.04 LTS | glibc | No fix yet | — |
| Ubuntu Pro 16.04 LTS | glibc | No fix yet | — |
| Ubuntu Pro 14.04 LTS | eglibc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | glibc +220 | 2.39-142.el10_2 | RHSA-2026:76781 |
| RHEL 9 | nscd +214 | 2.34-283.el9_8 | RHSA-2026:79281 |
| RHEL 8 | nscd +213 | 2.28-251.el8_10.43 | RHSA-2026:76777 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | glibc +227 | 2.43-8.1.hum1 | RHSA-2026:53069 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | glibc +220 | 2.39-142.el10_2.alma.1 | ALSA-2026:76781 |
| AlmaLinux 9 | nscd +214 | 2.34-283.el9_8 | ALSA-2026:79281 |
| AlmaLinux 8 | nscd +213 | 2.28-251.el8_10.43 | ALSA-2026:76777 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | glibc | 2.39-142.el10_2 | RLSA-2026:76781 |
| Rocky Linux 9 | glibc | 2.34-283.el9_8 | RLSA-2026:79281 |
| Rocky Linux 8 | glibc | 2.28-251.el8_10.43 | RLSA-2026:76777 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glibc | 2.38-150600.14.58.1 | SUSE-SU-2026:4250-1 |
| SLES 15 SP6 | glibc | 2.38-150600.14.58.1 | SUSE-SU-2026:4250-1 |
| SLES 15 SP5 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLES 15 SP4 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLES 12 SP5 | glibc | 2.22-114.52.2 | SUSE-SU-2026:4204-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | glibc | 2.40-160000.7.1 | SUSE-SU-2026:23934-1 |
| SLES for SAP 15 SP6 | glibc | 2.38-150600.14.58.1 | SUSE-SU-2026:4250-1 |
| SLES for SAP 15 SP5 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLES for SAP 15 SP4 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLES 16.0 | glibc | 2.40-160000.7.1 | SUSE-SU-2026:23934-1 |
| SLE Micro 6.2 | glibc | 2.40-160000.7.1 | SUSE-SU-2026:23957-1, SUSE-SU-2026:23929-1 |
| SLE Micro 6.1 | glibc | 2.38-slfo.1.1_10.1 | SUSE-SU-2026:23738-1 |
| SLE Micro 6.0 | glibc | 2.38-15.1 | SUSE-SU-2026:23830-1 |
| SLE Micro 5.5 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLE Micro 5.4 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLE Micro 5.3 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLE HPC 15 SP5 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
| SLE HPC 15 SP4 | glibc | 2.31-150300.109.1 | SUSE-SU-2026:4591-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.44-1.1 | openSUSE-SU-2026:11660-1 |
| openSUSE Leap 16.0 | glibc +4 | 2.40-160000.7.1 | openSUSE-SU-2026:21968-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | glibc | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | glibc +220 | 2.39-145.0.1.el10_2 | ELSA-2026-76781 |
| Oracle Linux 9 | nscd +214 | 2.34-283.0.1.el9_8 | ELSA-2026-79281 |
| Oracle Linux 8 | nscd +213 | 2.28-251.0.5.el8_10.48 | ELSA-2026-76777 |
Advisories 26
- WID-SEC-2026-2740 GNU libc: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- ELSA-2026-76781 Moderate: glibc security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Nov 3, 2026
- ELSA-2026-76777 Moderate: glibc security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 3, 2026
- ELSA-2026-79281 Moderate: glibc security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 2, 2026
- ALSA-2026:79281 Moderate: glibc security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:76781 Moderate: glibc security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:76777 Moderate: glibc security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:79281 Red Hat Security Advisory: glibc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:76781 Red Hat Security Advisory: glibc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:76777 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:53069 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RLSA-2026:76781 Moderate: glibc security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 11, 2026
- RLSA-2026:79281 Moderate: glibc security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 10, 2026
- SUSE-SU-2026:4591-1 Security update for glibc SUSE / openSUSE Security Updates · Oct 9, 2026
- RLSA-2026:76777 Moderate: glibc security update Rocky Linux Security Advisories · Oct 8, 2026
- SUSE-SU-2026:23957-1 Security update for glibc SUSE / openSUSE Security Updates · Oct 2, 2026
- SUSE-SU-2026:23929-1 Security update for glibc SUSE / openSUSE Security Updates · Oct 2, 2026
- SUSE-SU-2026:23934-1 Security update for glibc SUSE / openSUSE Security Updates · Oct 2, 2026
- openSUSE-SU-2026:21968-1 Security update for glibc SUSE / openSUSE Security Updates · Oct 1, 2026
- SUSE-SU-2026:23830-1 Security update for glibc SUSE / openSUSE Security Updates · Sep 27, 2026
- SUSE-SU-2026:23738-1 Security update for glibc SUSE / openSUSE Security Updates · Sep 27, 2026
- SUSE-SU-2026:4250-1 Security update for glibc SUSE / openSUSE Security Updates · Sep 18, 2026
- USN-8737-1 glibc vulnerabilities Ubuntu Security Notices (USN) · Sep 17, 2026
- USN-8737-2 glibc vulnerabilities Ubuntu Security Notices (USN) · Sep 17, 2026
- SUSE-SU-2026:4204-1 Security update for glibc SUSE / openSUSE Security Updates · Sep 16, 2026
- openSUSE-SU-2026:11660-1 glibc-2.44-1.1 on GA media SUSE / openSUSE Security Updates · Sep 2, 2026