NULL pointer dereference in GNU glibc
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: 35 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the cache, the client request can result in a null pointer dereference. This flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| GNU | glibc | 2.15 to before 2.40 | 2.40 | Patch available | CNA |
- glibc VendorGNU Affected 2.15 to before 2.40 Fixed in 2.40 Patch available CNA
CPE configurations NVD · 20
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | 2.15 to before 2.40 | Vulnerable | GNU |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| 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:a:gnu:glibc:*:*:*:*:*:*:*:* Versions 2.15 to before 2.40 Vulnerable ·GNU
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- 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
Show 10 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:netapp:h610c_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* | 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
- cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Remediation
- Fix · CNA glibc (The GNU C Library) Fixed in 2.40
Red Hat 10 advisories
- RHSA-2024:4126 Released 2024-06-26 · Red Hat rating ImportantRed Hat Service Interconnect 1.4.5 Release security update
- 9Base-Service-Interconnect-1.4 service-interconnect/skupper-config-sync-rhel9, service-interconnect/skupper-flow-collector-rhel9, service-interconnect/skupper-operator-bundle +3
- RHSA-2024:3588 Released 2024-06-04 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux Client (v. 7) glibc-2.17-326.el7_9.3, glibc-common-2.17-326.el7_9.3, glibc-devel-2.17-326.el7_9.3 +3
- Red Hat Enterprise Linux Client Optional (v. 7) glibc-static-2.17-326.el7_9.3
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) glibc-static-2.17-326.el7_9.3
- Red Hat Enterprise Linux Server (v. 7) glibc-2.17-326.el7_9.3, glibc-2.17-326.el7_9.3.ppc, glibc-common-2.17-326.el7_9.3 +5
- Red Hat Enterprise Linux Server Optional (v. 7) glibc-static-2.17-326.el7_9.3, glibc-static-2.17-326.el7_9.3.ppc
- Red Hat Enterprise Linux Workstation (v. 7) glibc-2.17-326.el7_9.3, glibc-common-2.17-326.el7_9.3, glibc-devel-2.17-326.el7_9.3 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) glibc-static-2.17-326.el7_9.3
- RHSA-2024:3464 Released 2024-05-29 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) compat-libpthread-nonshared-2.28-101.el8_2.2, glibc-utils-2.28-101.el8_2.2
- Red Hat Enterprise Linux BaseOS AUS (v. 8.2) glibc-2.28-101.el8_2.2, glibc-all-langpacks-2.28-101.el8_2.2, glibc-common-2.28-101.el8_2.2 +47
Show 7 more Red Hat advisories
- RHSA-2024:3411 Released 2024-05-28 · Red Hat rating Importantglibc security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) glibc-benchtests-2.34-60.el9_2.14, glibc-nss-devel-2.34-60.el9_2.14, glibc-static-2.34-60.el9_2.14 +2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) glibc-devel-2.34-60.el9_2.14, glibc-doc-2.34-60.el9_2.14, glibc-headers-2.34-60.el9_2.14 +2
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) glibc-2.34-60.el9_2.14, glibc-all-langpacks-2.34-60.el9_2.14, glibc-common-2.34-60.el9_2.14 +47
- RHSA-2024:3423 Released 2024-05-28 · Red Hat rating Importantglibc security update
- Red Hat CodeReady Linux Builder EUS (v.9.0) glibc-benchtests-2.34-28.el9_0.6, glibc-nss-devel-2.34-28.el9_0.6, glibc-static-2.34-28.el9_0.6 +2
- Red Hat Enterprise Linux AppStream EUS (v.9.0) glibc-devel-2.34-28.el9_0.6, glibc-doc-2.34-28.el9_0.6, glibc-headers-2.34-28.el9_0.6 +2
- Red Hat Enterprise Linux BaseOS EUS (v.9.0) glibc-2.34-28.el9_0.6, glibc-all-langpacks-2.34-28.el9_0.6, glibc-common-2.34-28.el9_0.6 +47
- RHSA-2024:3344 Released 2024-05-23 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream (v. 8) compat-libpthread-nonshared-2.28-251.el8_10.2, glibc-utils-2.28-251.el8_10.2
- Red Hat Enterprise Linux BaseOS (v. 8) glibc-2.28-251.el8_10.2, glibc-all-langpacks-2.28-251.el8_10.2, glibc-common-2.28-251.el8_10.2 +47
- Red Hat Enterprise Linux CRB (v. 8) glibc-benchtests-2.28-251.el8_10.2, glibc-nss-devel-2.28-251.el8_10.2, glibc-static-2.28-251.el8_10.2 +1
- RHSA-2024:3339 Released 2024-05-23 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream (v. 9) glibc-devel-2.34-100.el9_4.2, glibc-doc-2.34-100.el9_4.2, glibc-headers-2.34-100.el9_4.2 +2
- Red Hat Enterprise Linux BaseOS (v. 9) glibc-2.34-100.el9_4.2, glibc-all-langpacks-2.34-100.el9_4.2, glibc-common-2.34-100.el9_4.2 +47
- Red Hat Enterprise Linux CRB (v. 9) glibc-benchtests-2.34-100.el9_4.2, glibc-nss-devel-2.34-100.el9_4.2, glibc-static-2.34-100.el9_4.2 +2
- RHSA-2024:3312 Released 2024-05-23 · Red Hat rating Importantglibc security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) glibc-benchtests-2.28-225.el8_8.11, glibc-nss-devel-2.28-225.el8_8.11, glibc-static-2.28-225.el8_8.11 +1
- Red Hat Enterprise Linux AppStream EUS (v.8.8) compat-libpthread-nonshared-2.28-225.el8_8.11, glibc-utils-2.28-225.el8_8.11
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) glibc-2.28-225.el8_8.11, glibc-all-langpacks-2.28-225.el8_8.11, glibc-common-2.28-225.el8_8.11 +47
- RHSA-2024:3309 Released 2024-05-23 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) compat-libpthread-nonshared-2.28-151.el8_4.2, glibc-utils-2.28-151.el8_4.2
- Red Hat Enterprise Linux AppStream E4S (v.8.4) compat-libpthread-nonshared-2.28-151.el8_4.2, glibc-utils-2.28-151.el8_4.2
- Red Hat Enterprise Linux AppStream TUS (v.8.4) compat-libpthread-nonshared-2.28-151.el8_4.2, glibc-utils-2.28-151.el8_4.2
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) glibc-2.28-151.el8_4.2, glibc-all-langpacks-2.28-151.el8_4.2, glibc-common-2.28-151.el8_4.2 +47
- Red Hat Enterprise Linux BaseOS E4S (v.8.4) glibc-2.28-151.el8_4.2, glibc-all-langpacks-2.28-151.el8_4.2, glibc-common-2.28-151.el8_4.2 +47
- Red Hat Enterprise Linux BaseOS TUS (v.8.4) glibc-2.28-151.el8_4.2, glibc-all-langpacks-2.28-151.el8_4.2, glibc-common-2.28-151.el8_4.2 +47
- RHSA-2024:2799 Released 2024-05-09 · Red Hat rating Importantglibc security update
- Red Hat CodeReady Linux Builder EUS (v.8.6) glibc-benchtests-2.28-189.10.el8_6, glibc-nss-devel-2.28-189.10.el8_6, glibc-static-2.28-189.10.el8_6 +1
- Red Hat Enterprise Linux AppStream EUS (v.8.6) compat-libpthread-nonshared-2.28-189.10.el8_6, glibc-utils-2.28-189.10.el8_6
- Red Hat Enterprise Linux BaseOS EUS (v.8.6) glibc-2.28-189.10.el8_6, glibc-all-langpacks-2.28-189.10.el8_6, glibc-common-2.28-189.10.el8_6 +47
- Red Hat Virtualization 4 Hypervisor for RHEL 8 glibc-devel-2.28-189.10.el8_6, glibc-headers-2.28-189.10.el8_6
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
The GNU C Library glibc 2.40
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2024-22188 Reachable assertion in GNU glibcPriority MEDIUM 40
- TI-2024-22186 Stack-based buffer overflow in GNU glibcPriority LOW 38
- TI-2024-22189 nscd: netgroup cache assumes NSS callback uses in-buffer stringsPriority LOW 35
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 |
| 9Base-Service-Interconnect-1.4 | Fixed | RHSA-2024:4126 |
| Red Hat CodeReady Linux Builder EUS (v.8.6) | Fixed | RHSA-2024:2799 |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:3312 |
| Red Hat CodeReady Linux Builder EUS (v.9.0) | Fixed | RHSA-2024:3423 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:3411 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:3344 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:3339 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2024:3464 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2024:2799 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:3312 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2024:3423 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:3411 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:3344 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:3339 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2024:3464 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.6) | Fixed | RHSA-2024:2799 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:3312 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.0) | Fixed | RHSA-2024:3423 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:3411 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.4) | Fixed | RHSA-2024:3309 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:3344 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:3339 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2024:3588 |
| Red Hat Virtualization 4 Hypervisor for RHEL 8 | Fixed | RHSA-2024:2799 |
Not affected: 7 products
- Red Hat CodeReady Linux Builder EUS (v.8.6)
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux AppStream EUS (v.8.6)
- Red Hat Enterprise Linux BaseOS EUS (v.8.6)
- Red Hat Virtualization 4 Hypervisor for RHEL 8
Timeline
- 2026-10-02 Threatist record created from CVE-2024-33600
- 2026-10-03 Alias added: GHSA-jv3g-6pg3-v9j8
References
More GNU Glibc vulnerabilities
- TI-2023-04522 Glibc: buffer overflow in ld.so leading to privilege escalation KEVCVSS 3.1HIGH 7.8
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
- TI-2026-04772 scanf %mc off-by-one heap buffer overflow CVSS 3.1CRITICAL 9.8
- TI-2022-07360 The deprecated compatibility function clnt_create in the sunrpc module of the GNU C… CVSS 3.1CRITICAL 9.8
- TI-2022-07359 The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C… CVSS 3.1CRITICAL 9.8
- TI-2015-06274 Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the… CVSS 3.0HIGH 8.1
Sources
- CVE-2024-33600 · CVE Program
- CVE-2024-33600 · NVD
- FIRST EPSS
- GHSA-jv3g-6pg3-v9j8 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-33600 · Red Hat security data · CC BY 4.0
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