CVE-2023-53140 [Medium] | Information Disclosure in Linux Kernel

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

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.03%	0.15%	+0.12%
2	2026-06-10	0.09%	0.03%	-0.06%
3	2026-02-26	—	0.09%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.03%

0.15%

+0.12%

2026-06-10

0.09%

0.03%

-0.06%

2026-02-26

—

0.09%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

OS Trackers for CVE-2023-53140

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2023-53140 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2023-53140
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2023-53140
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2023-53140/
`ubuntu`	low	CVE-2023-53140 low priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 164, released 142, not-affected 94, needed 5, needs-triage 1.	https://ubuntu.com/security/CVE-2023-53140

Affected software / configurations for CVE-2023-53140

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 2.6.30, < 4.19.278	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.237	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.175	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.103	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.1.20	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.2, < 6.2.7	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2023-53140

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

URL

CVE-2023-53140 | scsi: core: Remove the /proc/scsi/${proc_name} directory earlier

Exploit prediction scoring system (EPSS) score for CVE-2023-53140

Common vulnerability scoring system (CVSS) metrics for CVE-2023-53140

Weakness enumeration for CVE-2023-53140

OS Trackers for CVE-2023-53140

Affected software / configurations for CVE-2023-53140

References for CVE-2023-53140