CVE-2023-53140

Summary

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: Remove the /proc/scsi/${proc_name} directory earlier

Remove the /proc/scsi/${proc_name} directory earlier to fix a race condition between unloading and reloading kernel modules. This fixes a bug introduced in 2009 by commit 77c019768f06 ("[SCSI] fix /proc memory leak in the SCSI core").

Fix the following kernel warning:

proc_dir_entry 'scsi/scsi_debug' already registered WARNING: CPU: 19 PID: 27986 at fs/proc/generic.c:376 proc_register+0x27d/0x2e0 Call Trace: proc_mkdir+0xb5/0xe0 scsi_proc_hostdir_add+0xb5/0x170 scsi_host_alloc+0x683/0x6c0 sdebug_driver_probe+0x6b/0x2d0 [scsi_debug] really_probe+0x159/0x540 __driver_probe_device+0xdc/0x230 driver_probe_device+0x4f/0x120 __device_attach_driver+0xef/0x180 bus_for_each_drv+0xe5/0x130 __device_attach+0x127/0x290 device_initial_probe+0x17/0x20 bus_probe_device+0x110/0x130 device_add+0x673/0xc80 device_register+0x1e/0x30 sdebug_add_host_helper+0x1a7/0x3b0 [scsi_debug] scsi_debug_init+0x64f/0x1000 [scsi_debug] do_one_initcall+0xd7/0x470 do_init_module+0xe7/0x330 load_module+0x122a/0x12c0 __do_sys_finit_module+0x124/0x1a0 __x64_sys_finit_module+0x46/0x50 do_syscall_64+0x38/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/13daafe1e209b03e9bda16ff2bd2b2da145a139b
• https://git.kernel.org/stable/c/891a3cba425cf483d96facca55aebd6ff1da4338
• https://git.kernel.org/stable/c/6b223e32d66ca9db1f252f433514783d8b22a8e1
• https://git.kernel.org/stable/c/e471e928de97b00f297ad1015cc14f9459765713
• https://git.kernel.org/stable/c/17e98a5ede81b7696bec421f7afa2dfe467f5e6b
• https://git.kernel.org/stable/c/1ec363599f8346d5a8d08c71a0d9860d6c420ec0
• https://git.kernel.org/stable/c/fc663711b94468f4e1427ebe289c9f05669699c9

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