{"cve":"CVE-2026-46101","nvd":{"published":"2026-05-27T14:17:32.147","modified":"2026-10-15T02:19:43.010","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: reject zero shift in nft_bitwise\n\nReject zero shift operands for nft_bitwise left and right shift\nexpressions during initialization.\n\nThe carry propagation logic computes the carry from the adjacent 32-bit\nword using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this\ninto a 32-bit shift, which is undefined behaviour.\n\nReject zero shift operands in the control plane, alongside the existing\ncheck for values greater than or equal to 32, so malformed rules never\nreach the packet path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/4fccea585631621c975883911a08d15b6671f7dc","https://git.kernel.org/stable/c/6f820139d16a4c9865a145d4a9cf9c92cc632c14","https://git.kernel.org/stable/c/9ad26c272405f53834871cc2e46b9b5393a666c3","https://git.kernel.org/stable/c/9baa08d6b6b096fad70049533f0d705d85fdc979","https://git.kernel.org/stable/c/bffef0acec9c3b837a785248a893137fb7f26c95"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-46101","score":0.00129,"percentile":0.02498,"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."]}