{"cve":"CVE-2024-46838","nvd":{"published":"2024-09-27T13:15:15.920","modified":"2026-06-17T07:56:03.413","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nuserfaultfd: don't BUG_ON() if khugepaged yanks our page table\n\nSince khugepaged was changed to allow retracting page tables in file\nmappings without holding the mmap lock, these BUG_ON()s are wrong - get\nrid of them.\n\nWe could also remove the preceding \"if (unlikely(...))\" block, but then we\ncould reach pte_offset_map_lock() with transhuge pages not just for file\nmappings but also for anonymous mappings - which would probably be fine\nbut I think is not necessarily expected.","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/4828d207dc5161dc7ddf9a4f6dcfd80c7dd7d20a","https://git.kernel.org/stable/c/4a594acc12d5954cdc71d4450a386748bf3d136a","https://git.kernel.org/stable/c/db978287e908d48b209e374b00d847b2d785e0a9"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:54:38.012257375+00:00"},"epss":{"cve":"CVE-2024-46838","score":0.00234,"percentile":0.14422,"date":"2026-11-01"},"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."]}