Bug 2507099 (CVE-2026-64412)

Summary: CVE-2026-64412 kernel: netfilter: ebtables: module names must be null-terminated
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's netfilter ebtables component. A local attacker could exploit this vulnerability by providing a specially crafted module name that is not properly null-terminated. This improper string handling could lead to a buffer over-read when the `request_module()` function processes the string. Successful exploitation could result in information disclosure, allowing an attacker to read sensitive kernel memory, or a denial of service (DoS), causing the system to crash.
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Description OSIDB Bzimport 2026-07-25 10:04:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: ebtables: module names must be null-terminated

We need to explicitly check the length, else we may pass non-null
terminated string to request_module().
Comment 1 TEJ RATHI 2026-07-30 06:33:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072532-CVE-2026-64412-2163@gregkh/T