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Fencer Vulns
low 3.6

CVE-2026-95818 json

AT_SECURE program buffer overflow via $ORIGIN processing

published 2026-09-22 48 d ago modified 2026-09-22 47 d ago also EUVD-2026-84558

cvss
3.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits
0
none known

Summary

A stack-based buffer overflow in the dynamic loader (ld.so) of the GNU C Library (glibc) versions 2.14 through 2.44 allows a local attacker to crash or corrupt the memory of setuid/setgid (AT_SECURE) programs.

When such a program's DT_RPATH or DT_RUNPATH begins with $ORIGIN and is followed by NUL or '/' the loader both reads past the end of the path buffer and writes past the end of a stack-allocated internal buffer. The corrupted loader stack can lead to a loader crash (denial of service) and limited disclosure of process memory.

Patch / fix

  • The GNU C Library glibc 2.45
  • glibc Debian 14 2.43-7

debian advisories DEBIAN-CVE-2026-95818

  • glibc hummingbird 1 2.43-8.7.hum1
  • libnsl hummingbird 1 2.43-8.7.hum1
  • nss_db hummingbird 1 2.43-8.7.hum1
  • glibc32 hummingbird 1 2.43-8.7.hum1
  • nss_hesiod hummingbird 1 2.43-8.7.hum1
  • glibc-utils hummingbird 1 2.43-8.7.hum1
  • glibc-common hummingbird 1 2.43-8.7.hum1
  • glibc-benchtests hummingbird 1 2.43-8.7.hum1

red hat advisories RHSA-2026:72503

  • glibc AlmaLinux 9 2.34-284.el9_8.4
  • nscd AlmaLinux 9 2.34-284.el9_8.4
  • libnsl AlmaLinux 9 2.34-284.el9_8.4
  • glibc-utils AlmaLinux 9 2.34-284.el9_8.4
  • glibc-gconv-extra AlmaLinux 9 2.34-284.el9_8.4
  • glibc-all-langpacks AlmaLinux 9 2.34-284.el9_8.4
  • glibc-locale-source AlmaLinux 9 2.34-284.el9_8.4
  • glibc-minimal-langpack AlmaLinux 9 2.34-284.el9_8.4

almalinux advisories ALSA-2026:95618

  • glibc Rocky Linux 9 2.34-284.el9_8.4

rocky linux advisories RLSA-2026:95618

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-2026-95818 updated cvss 7.0

glibc: glibc: Local attacker can cause denial of service and information disclosure via stack-based buffer overflow.

  • Red Hat Enterprise Linux 7 nscd, glibc, glibc-utils, glibc-common Red Hat Enterprise Linux 10 glibc
    affected: no fix available
  • 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 OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-rhel9, rhoai/odh-mod-arch-maas-rhel9, rhoai/odh-mod-arch-automl-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-mod-arch-mlflow-rhel9, +6 more
    under investigation
  • Red Hat Enterprise Linux AppStream (v. 8) glibc-utils 2.28-251.el8_10.53, compat-libpthread-nonshared 2.28-251.el8_10.53
    fixed: vendor fix RHSA-2026:96087
  • Red Hat Enterprise Linux AppStream (v. 9) glibc-utils 2.34-284.el9_8.4, glibc-locale-source 2.34-284.el9_8.4
    fixed: vendor fix RHSA-2026:95618
  • Red Hat Enterprise Linux BaseOS (v. 8) nscd 2.28-251.el8_10.53, glibc 2.28-251.el8_10.53, libnsl 2.28-251.el8_10.53, nss_db 2.28-251.el8_10.53, glibc-common 2.28-251.el8_10.53, glibc-gconv-extra 2.28-251.el8_10.53, +3 more
    fixed: vendor fix RHSA-2026:96087
  • Red Hat Enterprise Linux BaseOS (v. 9) nscd 2.34-284.el9_8.4, glibc 2.34-284.el9_8.4, libnsl 2.34-284.el9_8.4, glibc-common 2.34-284.el9_8.4, glibc-gconv-extra 2.34-284.el9_8.4, glibc-all-langpacks 2.34-284.el9_8.4, +1 more Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) nss_db 2.34-284.el9_8.4, nss_hesiod 2.34-284.el9_8.4, glibc-benchtests 2.34-284.el9_8.4
    fixed: vendor fix RHSA-2026:95618
  • Red Hat Enterprise Linux CRB (v. 8) nss_hesiod 2.28-251.el8_10.53, glibc-benchtests 2.28-251.el8_10.53
    fixed: vendor fix RHSA-2026:96087
show 2 more
  • Red Hat Hardened Images glibc 2.43-8.7.hum1, libnsl 2.43-8.7.hum1, nss_db 2.43-8.7.hum1, glibc32 2.43-8.7.hum1, nss_hesiod 2.43-8.7.hum1, glibc-utils 2.43-8.7.hum1, +9 more
    fixed: vendor fix RHSA-2026:72503
  • Red Hat Enterprise Linux 6 nscd, glibc, glibc-utils, compat-glibc, glibc-common Red Hat Enterprise Linux 7 compat-glibc Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kube-rbac-proxy-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-mlflow-operator-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-ogx-k8s-operator-rhel9, +14 more
    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
47 d ago

Exploit prediction

0.10% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected products

  • The GNU C Library glibc

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

References

Sources

Fencer Vulns 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.