CVE-2024-47733

Publication date

2024-10-21 12:14:04

Family

Linux

State

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: netfs: Delete subtree of fs/netfs when netfs module exits In netfs_init() or fscache_proc_init(), we create dentry under fs/netfs, but in netfs_exit(), we only delete the proc entry of fs/netfs without deleting its subtree. This triggers the following WARNING: ================================================================== remove_proc_entry: removing non-empty directory fs/netfs, leaking at least requests WARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0 Modules linked in: netfs(-) CPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860 RIP: 0010:remove_proc_entry+0x160/0x1c0 Call Trace: netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ================================================================== Therefore use remove_proc_subtree() instead of remove_proc_entry() to fix the above problem.