{"id":"CVE-2025-38711","summary":"smb/server: avoid deadlock when linking with ReplaceIfExists","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: avoid deadlock when linking with ReplaceIfExists\n\nIf smb2_create_link() is called with ReplaceIfExists set and the name\ndoes exist then a deadlock will happen.\n\nksmbd_vfs_kern_path_locked() will return with success and the parent\ndirectory will be locked.  ksmbd_vfs_remove_file() will then remove the\nfile.  ksmbd_vfs_link() will then be called while the parent is still\nlocked.  It will try to lock the same parent and will deadlock.\n\nThis patch moves the ksmbd_vfs_kern_path_unlock() call to *before*\nksmbd_vfs_link() and then simplifies the code, removing the file_present\nflag variable.","modified":"2026-04-16T04:41:26.854765618Z","published":"2025-09-04T15:33:01.367Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38711.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1e858a7a51c7b8b009d8f246de7ceb7743b44a71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/814cfdb6358d9b84fcbec9918c8f938cc096a43a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d5012ffe14120f978ee34aef4df3d6cb026b7c4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a726fef6d7d4cfc365d3434e3916dbfe78991a33"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7dddd62578c2eb6cb28b8835556a121b5157323"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac98d54630d5b52e3f684d872f0d82c06c418ea9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38711.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38711"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0626e6641f6b467447c81dd7678a69c66f7746cf"},{"fixed":"9d5012ffe14120f978ee34aef4df3d6cb026b7c4"},{"fixed":"ac98d54630d5b52e3f684d872f0d82c06c418ea9"},{"fixed":"1e858a7a51c7b8b009d8f246de7ceb7743b44a71"},{"fixed":"814cfdb6358d9b84fcbec9918c8f938cc096a43a"},{"fixed":"a7dddd62578c2eb6cb28b8835556a121b5157323"},{"fixed":"a726fef6d7d4cfc365d3434e3916dbfe78991a33"},{"fixed":"d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38711.json"}}],"schema_version":"1.7.5"}