In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: eb_tables: close module init race sashiko reports for… (CVE-2026-64076)
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: eb_tables: close module init race sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally. sockopt has to be registered last, just like in ip/ip6/arptables.
AI Analysis
Technical Summary
CVE-2026-64076 describes a race condition in the Linux kernel's netfilter bridge ebtables module initialization. The vulnerability arises because socket options (sockopts) are exposed globally immediately after nf_register_sockopt() completes, potentially before the module initialization is fully complete. This can cause a race condition during module initialization. The fix involves registering sockopts last to prevent premature exposure, aligning with the approach used in ip/ip6/arptables modules.
Potential Impact
The vulnerability could allow a race condition during module initialization in the netfilter bridge ebtables component of the Linux kernel. The exact impact is not detailed in the provided data, and no known exploits in the wild have been reported. Without further details, the impact is limited to potential instability or unexpected behavior during module initialization.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adjusting the order of socket option registration during module initialization. Users should apply the official kernel updates that include this fix once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisories for the current remediation status and apply updates accordingly.
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: eb_tables: close module init race sashiko reports for… (CVE-2026-64076)
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: eb_tables: close module init race sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally. sockopt has to be registered last, just like in ip/ip6/arptables.
CVSS v3.1
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64076 describes a race condition in the Linux kernel's netfilter bridge ebtables module initialization. The vulnerability arises because socket options (sockopts) are exposed globally immediately after nf_register_sockopt() completes, potentially before the module initialization is fully complete. This can cause a race condition during module initialization. The fix involves registering sockopts last to prevent premature exposure, aligning with the approach used in ip/ip6/arptables modules.
Potential Impact
The vulnerability could allow a race condition during module initialization in the netfilter bridge ebtables component of the Linux kernel. The exact impact is not detailed in the provided data, and no known exploits in the wild have been reported. Without further details, the impact is limited to potential instability or unexpected behavior during module initialization.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adjusting the order of socket option registration during module initialization. Users should apply the official kernel updates that include this fix once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisories for the current remediation status and apply updates accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w5f5-9vqp-v57f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64076"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27a92a4a8d598912bef0
Added to database: 07/19/2026, 19:38:17 UTC
Last enriched: 07/19/2026, 19:50:51 UTC
Last updated: 07/20/2026, 19:41:22 UTC
Views: 11
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