Bug 2451218 (CVE-2026-23392)
| Summary: | CVE-2026-23392 kernel: netfilter: nf_tables: release flowtable after rcu grace period on error | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | rhel-process-autobot, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in the Linux kernel's netfilter component, specifically within the nf_tables subsystem. An error in releasing a flowtable after an RCU (Read-Copy-Update) grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and nfnetlink_hook control plane, potentially allowing a local attacker to cause a system crash (Denial of Service) or achieve arbitrary code execution.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-03-25 11:05:17 UTC
Upstream advisory: https://lore.kernel.org/linux-cve-announce/2026032548-CVE-2026-23392-fd9d@gregkh/T This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:21557 https://access.redhat.com/errata/RHSA-2026:21557 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:21556 https://access.redhat.com/errata/RHSA-2026:21556 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Via RHSA-2026:23237 https://access.redhat.com/errata/RHSA-2026:23237 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:23224 https://access.redhat.com/errata/RHSA-2026:23224 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:24343 https://access.redhat.com/errata/RHSA-2026:24343 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:25120 https://access.redhat.com/errata/RHSA-2026:25120 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:25121 https://access.redhat.com/errata/RHSA-2026:25121 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:26462 https://access.redhat.com/errata/RHSA-2026:26462 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:26515 https://access.redhat.com/errata/RHSA-2026:26515 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:26535 https://access.redhat.com/errata/RHSA-2026:26535 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:26563 https://access.redhat.com/errata/RHSA-2026:26563 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Via RHSA-2026:26570 https://access.redhat.com/errata/RHSA-2026:26570 |