{"cve":"CVE-2023-52581","nvd":{"published":"2024-03-02T22:15:49.727","modified":"2026-06-17T06:43:04.583","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix memleak when more than 255 elements expired\n\nWhen more than 255 elements expired we're supposed to switch to a new gc\ncontainer structure.\n\nThis never happens: u8 type will wrap before reaching the boundary\nand nft_trans_gc_space() always returns true.\n\nThis means we recycle the initial gc container structure and\nlose track of the elements that came before.\n\nWhile at it, don't deref 'gc' after we've passed it to call_rcu.","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:N/A:H","score":6.3},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8","https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14","https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125","https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07","https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2023-52581","score":0.00255,"percentile":0.17105,"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."]}