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Back to active CVEs
High ยท CVSS 7.8CVE-2024-0193

Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalationCVE-2024-0193

Answer in brief

CVE-2024-0193 records a High severity (CVSS 7.8) vulnerability in Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation. The current sources do not mark it as known exploited. The current feed maps kernel (generic), Red Hat/kernel-rt (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jan 2, 2024Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
High ยท CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
67 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kernel (generic), Red Hat/kernel-rt (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:aarch64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_eus:9.2:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_eus:9.4:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_eus:9.4:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_eus:9.6:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_eus:9.6:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.4_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.6_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.4_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.6_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:openshift_logging:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.2:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.4_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.6_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64_els:9.4_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64_els:9.6_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.4_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.6_aarch64:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_els:9.2:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_els:9.2:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_els:9.4:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_els:9.6:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_eus:9.2:*:*:*:*:*:arm64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_eus:9.2:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_eus:9.4:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_eus:9.6:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.2_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.4_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.6_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_els:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_els:9.4_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_els:9.6_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.4_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.6_s390x:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_els:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_els:9.4_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_els:9.6_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.4_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.6_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_update_services_for_sap_solutions:9.0:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_update_services_for_sap_solutions:9.2:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_update_services_for_sap_solutions:9.4:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_for_update_services_for_sap_solutions:9.6:*:*:*:*:*:x64:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_aus:9.4:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_aus:9.6:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.4_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.6_ppc64le:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
kernelgeneric*Not reported
Red Hat/kernel-rtgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for kernel, Red Hat/kernel-rt.
  2. 2Review the reported fix. Source-reported workaround: In order to trigger the issue, it requires the ability to create user/net namespaces. On non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0: # echo "user.max_user_namespaces=0" > /etc/sysctl.d/userns.conf # sysctl -p /etc/sysctl.d/userns.conf On containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.

Evidence timeline and material changes

  1. Published upstream

    Jan 2, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416
Source
CVE List V5
Source checked
Nov 4, 2026
References
8 linked sources
Open source record