{"cve":"CVE-2026-46330","nvd":{"published":"2026-06-09T14:16:42.723","modified":"2026-10-21T13:19:06.873","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"net/smc: Introduce TCP ULP support\"\n\nThis reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.\n\nAs reported by Al Viro, the TCP ULP support for SMC is fundamentally\nbroken. The implementation attempts to convert an active TCP socket\ninto an SMC socket by modifying the underlying `struct file`, dentry,\nand inode in-place, which violates core VFS invariants that assume\nthese structures are immutable for an open file, creating a risk of\nuse after free errors and general system instability.\n\nGiven the severity of this design flaw and the fact that cleaner\nalternatives (e.g., LD_PRELOAD, BPF) exist for legacy application\ntransparency, the correct course of action is to remove this feature\nentirely.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/6c505d95c69e27dbf28fea29dc84d2498d69515c","https://git.kernel.org/stable/c/74d33525db50d9d95156c79cc874752654e66e70","https://git.kernel.org/stable/c/dc24e03be0e4bb2aad1a9b272c4f86de3b11969a","https://git.kernel.org/stable/c/dc824ffc28e5c9d0020b6bee2651b4aceed5b2bf","https://git.kernel.org/stable/c/df31a6b0a3057e66994ad6ccf5d95b9b9514f033"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-46330","score":0.00152,"percentile":0.04261,"date":"2026-10-26"},"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."]}