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CVE-2026-64413 Details

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chainstack array sashiko reports: looking at ebtables table translation, could a sparse cpu_possible_mask lead to an uninitialized pointer free? If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible, but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at CPU 2, the cleanup loop will blindly decrement and call vfree() on newinfo->chainstack[1]. Not a real-world bug, such allocation isn't expected to fail in the first place.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-019113.html siemens-SADP
https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8 kernel.orgPatch
https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa kernel.orgPatch
https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef kernel.orgPatch
https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6 kernel.orgPatch

see all 9 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-908Use of Uninitialized Resource[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 2.6.12.1, < 5.10.261
>= 5.11, < 5.15.212
>= 5.16, < 6.1.178
>= 6.2, < 6.6.145
>= 6.7, < 6.12.97

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-64413
NVD Published Date:
Jul 25, 2026
NVD Last Modified:
Sep 8, 2026
Source:
kernel.org
CVE-2026-64413 Details - Not Deferred