{"cve":"CVE-2025-21789","nvd":{"published":"2025-02-27T03:15:19.763","modified":"2026-07-30T06:21:30.987","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: csum: Fix OoB access in IP checksum code for negative lengths\n\nCommit 69e3a6aa6be2 (\"LoongArch: Add checksum optimization for 64-bit\nsystem\") would cause an undefined shift and an out-of-bounds read.\n\nCommit 8bd795fedb84 (\"arm64: csum: Fix OoB access in IP checksum code\nfor negative lengths\") fixes the same issue on ARM64.","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:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a","https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06","https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97","https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2025-21789","score":0.0023,"percentile":0.13885,"date":"2026-10-31"},"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."]}