{"cve":"CVE-2026-64371","nvd":{"published":"2026-07-25T10:17:20.010","modified":"2026-10-15T02:20:12.393","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (part 1)\n\nFix the easy cases where procfs currently calls ptrace_may_access() without\nexec_update_lock protection, where the fix is to simply add the extra lock\nor use mm_access():\n\n - do_task_stat(): grab exec_update_lock\n - proc_pid_wchan(): grab exec_update_lock\n - proc_map_files_lookup(): use mm_access() instead of get_task_mm()\n - proc_map_files_readdir(): use mm_access() instead of get_task_mm()\n - proc_ns_get_link(): grab exec_update_lock\n - proc_ns_readlink(): grab exec_update_lock","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/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4","https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69","https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0","https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d","https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:46:40.600842820+00:00"},"epss":{"cve":"CVE-2026-64371","score":0.00129,"percentile":0.02493,"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."]}