{"cve":"CVE-2026-64413","nvd":{"published":"2026-07-25T10:17:25.110","modified":"2026-10-19T21:17:36.707","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: zero chainstack array\n\nsashiko reports:\n looking at ebtables table\n translation, could a sparse cpu_possible_mask lead to an uninitialized pointer\n free?\n\n If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible,\n but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at\n CPU 2, the cleanup loop will blindly decrement and call vfree() on\n newinfo->chainstack[1].\n\nNot a real-world bug, such allocation isn't expected to fail\nin the first place.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.0},"cwes":["CWE-908","CWE-457"],"references":["https://git.kernel.org/stable/c/29bf41a9b59aff9f6197df58641a00037d567ca8","https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa","https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef","https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6","https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-64413","score":0.00128,"percentile":0.02409,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}