Glibc: potential use-after-free in gaih_inet()
Priority LOW 30CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 10 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.
Why it matters now
EPSS 0.01926 80th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 10 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.28-225.el8_8.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.28-225.el8_8.6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | — | 2.28-189.8.el8_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.34-60.el9_2.7 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.34-60.el9_2.7 | Patch available | CNA |
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | — | 2.28-189.8.el8_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.28-225.el8_8.6 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.28-225.el8_8.6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Extended Update Support VendorRed Hat Affected — Fixed in 2.28-189.8.el8_6 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.34-60.el9_2.7 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.34-60.el9_2.7 Patch available CNA
- Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.28-189.8.el8_6 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 23
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | before 2.36 | Vulnerable | GNU |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_s390x:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.2_ppc64le:*:*:*:*:*:*:* | 9.2_ppc64le | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* | 9.2_ppc64le | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions before 2.36 Vulnerable ·GNU
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_s390x:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.2_ppc64le:*:*:*:*:*:*:* Versions 9.2_ppc64le Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* Versions 9.2_ppc64le Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
Show 13 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_server_tus:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
Red Hat 3 advisories
- RHSA-2023:7409 Released 2023-11-21 · Red Hat rating Moderateglibc security update
- Red Hat CodeReady Linux Builder EUS (v.8.6) glibc-benchtests-2.28-189.8.el8_6, glibc-nss-devel-2.28-189.8.el8_6, glibc-static-2.28-189.8.el8_6 +1
- Red Hat Enterprise Linux AppStream EUS (v.8.6) compat-libpthread-nonshared-2.28-189.8.el8_6, glibc-utils-2.28-189.8.el8_6
- Red Hat Enterprise Linux BaseOS EUS (v.8.6) glibc-2.28-189.8.el8_6, glibc-all-langpacks-2.28-189.8.el8_6, glibc-common-2.28-189.8.el8_6 +47
- Red Hat Virtualization 4 Hypervisor for RHEL 8 glibc-devel-2.28-189.8.el8_6, glibc-headers-2.28-189.8.el8_6
- RHSA-2023:5455 Released 2023-10-05 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream (v. 8) compat-libpthread-nonshared-2.28-225.el8_8.6, glibc-utils-2.28-225.el8_8.6
- Red Hat Enterprise Linux BaseOS (v. 8) glibc-2.28-225.el8_8.6, glibc-all-langpacks-2.28-225.el8_8.6, glibc-common-2.28-225.el8_8.6 +47
- Red Hat Enterprise Linux CRB (v. 8) glibc-benchtests-2.28-225.el8_8.6, glibc-nss-devel-2.28-225.el8_8.6, glibc-static-2.28-225.el8_8.6 +1
- RHSA-2023:5453 Released 2023-10-05 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream (v. 9) glibc-devel-2.34-60.el9_2.7, glibc-doc-2.34-60.el9_2.7, glibc-headers-2.34-60.el9_2.7 +2
- Red Hat Enterprise Linux BaseOS (v. 9) glibc-2.34-60.el9_2.7, glibc-all-langpacks-2.34-60.el9_2.7, glibc-common-2.34-60.el9_2.7 +47
- Red Hat Enterprise Linux CRB (v. 9) glibc-benchtests-2.34-60.el9_2.7, glibc-nss-devel-2.34-60.el9_2.7, glibc-static-2.34-60.el9_2.7 +2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 and 4 more products — RHSA-2023:5453
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2023-04175 Glibc: stack read overflow in getaddrinfo in no-aaaa modePriority LOW 32
- TI-2023-04423 Glibc: potential use-after-free in getaddrinfo()Priority LOW 30
- Advisory ·
Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 and 4 more products — RHSA-2023:5455
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2023-04175 Glibc: stack read overflow in getaddrinfo in no-aaaa modePriority LOW 32
- TI-2023-04423 Glibc: potential use-after-free in getaddrinfo()Priority LOW 30
Show 1 more group
- Advisory ·
Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 and 4 more products — RHSA-2023:7409
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2023-04423 Glibc: potential use-after-free in getaddrinfo()Priority LOW 30
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder EUS (v.8.6) | Fixed | RHSA-2023:7409 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2023:5455 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:5453 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2023:7409 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2023:5455 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:5453 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.6) | Fixed | RHSA-2023:7409 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2023:5455 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2023:5453 |
| Red Hat Virtualization 4 Hypervisor for RHEL 8 | Fixed | RHSA-2023:7409 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-4813
- 2026-10-03 Alias added: GHSA-qx6j-g797-jg9r
- 2026-10-30 Affected versions changed · CNA
References
More Red Hat Enterprise Linux vulnerabilities
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
Sources
- CVE-2023-4813 · CVE Program
- CVE-2023-4813 · NVD
- FIRST EPSS
- GHSA-qx6j-g797-jg9r · GitHub Advisory Database · CC BY 4.0
- CVE-2023-4813 · Red Hat security data · CC BY 4.0
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