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Fencer Intel
low 2.1

CVE-2026-6368 json

wordexp with WRDE_APPEND can return or use invalid memory

published 3mo ago modified 2mo ago also EUVD-2026-55727

cvss
2.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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.

Patch / fix

  • glibc glibc 2.43
  • glibc Debian 14 2.43-4

debian advisories DEBIAN-CVE-2026-6368

  • glibc Ubuntu 22.04 LTS 2.35-0ubuntu3.15
  • glibc Ubuntu 24.04 LTS 2.39-0ubuntu8.9
  • glibc Ubuntu 26.04 LTS 2.43-2ubuntu2.4

ubuntu advisories UBUNTU-CVE-2026-6368

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • glibc RHEL 9 2.34-283.el9_8
  • nscd RHEL 9 2.34-283.el9_8
  • libnsl RHEL 9 2.34-283.el9_8
  • nss_db RHEL 9 2.34-283.el9_8
  • nss_hesiod RHEL 9 2.34-283.el9_8
  • glibc-utils RHEL 9 2.34-283.el9_8
  • glibc-common RHEL 9 2.34-283.el9_8
  • glibc-benchtests RHEL 9 2.34-283.el9_8

red hat advisories RHSA-2026:79281RHSA-2026:76781RHSA-2026:76777RHSA-2026:53069

  • glibc SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 2.31-150300.109.1
  • glibc SLES 16.0, Linux Micro Extras 6.2, Linux Micro 6.2 +1 more 2.40-160000.7.1
  • glibc SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 2.38-150600.14.58.1
  • glibc Linux Micro 6.1 2.38-slfo.1.1_10.1
  • glibc Linux Micro 6.0 2.38-15.1
  • glibc SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.22-114.52.2

suse advisories SUSE-SU-2026:4591-1SUSE-SU-2026:23934-1SUSE-SU-2026:23957-1SUSE-SU-2026:23929-1SUSE-SU-2026:4250-1SUSE-SU-2026:4204-1

  • glibc openSUSE Leap 16.0 2.40-160000.7.1
  • glibc-cross-s390x-src openSUSE Leap 16.0 2.40-160000.7.1
  • glibc-cross-aarch64-src openSUSE Leap 16.0 2.40-160000.7.1
  • glibc-cross-ppc64le-src openSUSE Leap 16.0 2.40-160000.7.1
  • glibc-cross-riscv64-src openSUSE Leap 16.0 2.40-160000.7.1
  • glibc openSUSE Tumbleweed 2.44-1.1

opensuse advisories openSUSE-SU-2026:21968-1openSUSE-SU-2026:11660-1

  • glibc AlmaLinux 9 2.34-283.el9_8
  • nscd AlmaLinux 9 2.34-283.el9_8
  • libnsl AlmaLinux 9 2.34-283.el9_8
  • nss_db AlmaLinux 9 2.34-283.el9_8
  • nss_hesiod AlmaLinux 9 2.34-283.el9_8
  • glibc-utils AlmaLinux 9 2.34-283.el9_8
  • glibc-common AlmaLinux 9 2.34-283.el9_8
  • glibc-benchtests AlmaLinux 9 2.34-283.el9_8

almalinux advisories ALSA-2026:79281ALSA-2026:76777ALSA-2026:76781

  • glibc Rocky Linux 10 2.39-142.el10_2
  • glibc Rocky Linux 9 2.34-283.el9_8
  • glibc Rocky Linux 8 2.28-251.el8_10.43

rocky linux advisories RLSA-2026:76781RLSA-2026:79281RLSA-2026:76777

Is CVE-2026-6368 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-6368 updated cvss 5.5

glibc: glibc: Process abort due to invalid memory in wordexp

  • Red Hat Enterprise Linux 6 nscd, glibc, glibc-utils, glibc-common, compat-glibc 2.5-46.2
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 nscd, glibc, glibc-utils, compat-glibc, glibc-common, compat-glibc 2.5-46.2 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: no fix available “Fix deferred”
  • Red Hat Cost Management 4 costmanagement/costmanagement-metrics-rhel9-operator 1793202662
    fixed: vendor fix RHSA-2026:95264
  • Red Hat Enterprise Linux AppStream (v. 8) glibc-utils 2.28-251.el8_10.43, compat-libpthread-nonshared 2.28-251.el8_10.43
    fixed: vendor fix RHSA-2026:76777
  • Red Hat Enterprise Linux AppStream (v. 9) glibc-utils 2.34-283.el9_8, glibc-locale-source 2.34-283.el9_8
    fixed: vendor fix RHSA-2026:79281
  • Red Hat Enterprise Linux AppStream (v. 10) glibc-utils 2.39-142.el10_2, glibc-locale-source 2.39-142.el10_2
    fixed: vendor fix RHSA-2026:76781
  • Red Hat Enterprise Linux BaseOS (v. 8) nscd 2.28-251.el8_10.43, glibc 2.28-251.el8_10.43, libnsl 2.28-251.el8_10.43, nss_db 2.28-251.el8_10.43, glibc-common 2.28-251.el8_10.43, glibc-gconv-extra 2.28-251.el8_10.43, +3 more
    fixed: vendor fix RHSA-2026:76777
  • Red Hat Enterprise Linux BaseOS (v. 9) nscd 2.34-283.el9_8, glibc 2.34-283.el9_8, libnsl 2.34-283.el9_8, glibc-common 2.34-283.el9_8, glibc-gconv-extra 2.34-283.el9_8, glibc-all-langpacks 2.34-283.el9_8, +1 more
    fixed: vendor fix RHSA-2026:79281
show 7 more
  • Red Hat Enterprise Linux BaseOS (v. 10) glibc 2.39-142.el10_2, libnsl 2.39-142.el10_2, glibc-common 2.39-142.el10_2, glibc-gconv-extra 2.39-142.el10_2, glibc-all-langpacks 2.39-142.el10_2, glibc-minimal-langpack 2.39-142.el10_2
    fixed: vendor fix RHSA-2026:76781
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) nss_db 2.34-283.el9_8, nss_hesiod 2.34-283.el9_8, glibc-benchtests 2.34-283.el9_8
    fixed: vendor fix RHSA-2026:79281
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) nss_db 2.39-142.el10_2, nss_hesiod 2.39-142.el10_2, glibc-benchtests 2.39-142.el10_2
    fixed: vendor fix RHSA-2026:76781
  • Red Hat Enterprise Linux CRB (v. 8) nss_hesiod 2.28-251.el8_10.43, glibc-benchtests 2.28-251.el8_10.43
    fixed: vendor fix RHSA-2026:76777
  • Red Hat Hardened Images glibc 2.43-8.1.hum1, libnsl 2.43-8.1.hum1, nss_db 2.43-8.1.hum1, glibc32 2.43-8.1.hum1, nss_hesiod 2.43-8.1.hum1, glibc-utils 2.43-8.1.hum1, +9 more
    fixed: vendor fix RHSA-2026:53069
  • Red Hat Update Infrastructure 5 rhui5/cds-rhel9 1791978528, rhui5/rhua-rhel9 1791978693, rhui5/haproxy-rhel9 1791978528, rhui5/installer-rhel9 1791964013, rhui5/cds-kubernetes-rhel9 1791978534
    fixed: vendor fix RHSA-2026:82939
  • Red Hat Cost Management 4 costmanagement/costmanagement-metrics-operator-bundle 1793205914 Red Hat Hardened Images filesystem 3.18-59.hum1 Red Hat OpenShift AI (RHOAI) rhoai/odh-kserve-controller-rhel9, rhoai/odh-model-serving-api-rhel9, rhoai/odh-workbenches-operator-rhel9, rhoai/odh-llama-stack-k8s-operator-rhel9, rhoai/odh-kserve-llmisvc-controller-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2mo ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 4.0 2.1 CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:Green
CNA 4.0 2.1 CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:X/V:X/RE:X/U:Green

Affected products

  • glibc glibc

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.