{"api_version":"1","generated_at":"2026-08-04T07:35:36+00:00","cve":"CVE-2026-64371","urls":{"html":"https://cve.report/CVE-2026-64371","api":"https://cve.report/api/cve/CVE-2026-64371.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64371","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64371"},"summary":{"title":"proc: protect ptrace_may_access() with exec_update_lock (part 1)","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","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:20","updated_at":"2026-07-25 10:17:20"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d","name":"https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4","name":"https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0","name":"https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7","name":"https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9","name":"https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e","name":"https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69","name":"https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3","name":"https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64371","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64371","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f83ce3e6b02d5e48b3a43b001390e2b58820389d ae1e630bcaac739f625822078edbaea98366930d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f83ce3e6b02d5e48b3a43b001390e2b58820389d d54f14655fd7d7b293698a8b6918563c4c0465e7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f83ce3e6b02d5e48b3a43b001390e2b58820389d bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f83ce3e6b02d5e48b3a43b001390e2b58820389d 7456ae990a9738962b33146916fabca62ae3d4e0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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"}],"providerMetadata":{"dateUpdated":"2026-07-25T08:50:23.981Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d"},{"url":"https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7"},{"url":"https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9"},{"url":"https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0"},{"url":"https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4"},{"url":"https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3"},{"url":"https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e"},{"url":"https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69"}],"title":"proc: protect ptrace_may_access() with exec_update_lock (part 1)","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64371","datePublished":"2026-07-25T08:50:23.981Z","dateReserved":"2026-07-19T15:36:31.783Z","dateUpdated":"2026-07-25T08:50:23.981Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:20","lastModifiedDate":"2026-07-25 10:17:20","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64371","Ordinal":"1","Title":"proc: protect ptrace_may_access() with exec_update_lock (part 1)","CVE":"CVE-2026-64371","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64371","Ordinal":"1","NoteData":"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","Type":"Description","Title":"proc: protect ptrace_may_access() with exec_update_lock (part 1)"}]}}}