CVE-2024-47733

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: <TASK> 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.

Reserved 2024-09-30 | Published 2024-10-21 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab before 603f95cefbee06a31b03137b777f03e3c2163d72
affected

7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab before 7a9eaf97d56625e55b31a7beb558e1ee185ca461
affected

7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab before 3c58a9575e02c2b90a3180007d57105ceaa7c246
affected

Default status
affected

6.8
affected

Any version before 6.8
unaffected

6.10.13
unaffected

6.11.2
unaffected

6.12
unaffected

References

git.kernel.org/...c/603f95cefbee06a31b03137b777f03e3c2163d72

git.kernel.org/...c/7a9eaf97d56625e55b31a7beb558e1ee185ca461

git.kernel.org/...c/3c58a9575e02c2b90a3180007d57105ceaa7c246

cve.org (CVE-2024-47733)

nvd.nist.gov (CVE-2024-47733)

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