CVE-2022-49525 [Medium] | Information Disclosure in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: media: cx25821: Fix the warning when removing the module When removing the module, we will get the following warning: [ 14.746697] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'cx25821[1]' [ 14.747449] WARNING: CPU: 4 PID: 368 at fs/proc/generic.c:717 remove_proc_entry+0x389/0x3f0 [ 14.751611] RIP: 0010:remove_proc_entry+0x389/0x3f0 [ 14.759589] Call Trace: [ 14.759792] <TASK> [ 14.759975] unregister_irq_proc+0x14c/0x170 [ 14.760340] irq_free_descs+0x94/0xe0 [ 14.760640] mp_unmap_irq+0xb6/0x100 [ 14.760937] acpi_unregister_gsi_ioapic+0x27/0x40 [ 14.761334] acpi_pci_irq_disable+0x1d3/0x320 [ 14.761688] pci_disable_device+0x1ad/0x380 [ 14.762027] ? _raw_spin_unlock_irqrestore+0x2d/0x60 [ 14.762442] ? cx25821_shutdown+0x20/0x9f0 [cx25821] [ 14.762848] cx25821_finidev+0x48/0xc0 [cx25821] [ 14.763242] pci_device_remove+0x92/0x240 Fix this by freeing the irq before call pci_disable_device().

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-24	0.05%	0.04%	-0.01%
2	2026-04-06	0.03%	0.05%	+0.03%
3	2025-10-22	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-24

0.05%

0.04%

-0.01%

2026-04-06

0.03%

0.05%

+0.03%

2025-10-22

—

0.03%

—

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-2022-49525

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-49525 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-2022-49525
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2022-49525
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-49525/
`ubuntu`	medium	CVE-2022-49525 medium 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, released 151, ignored 149, not-affected 101, needed 5.	https://ubuntu.com/security/CVE-2022-49525

Affected software / configurations for CVE-2022-49525

Vendor	Product	Version	Raw CPE
linux	linux_kernel	< 4.9.318	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.283	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.247	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.198	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.121	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.46	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.17.14	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.18, < 5.18.3	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-49525

URL	Tags
https://git.kernel.org/stable/c/005fd553f5f10fe8618d92f94ad10f9051eac331	Patch
https://git.kernel.org/stable/c/1f0fc1dfb5fdd456657519a97fab83691b96c6a0	Patch
https://git.kernel.org/stable/c/2203436a4d24302871617373a7eb21bc17e38762	Patch
https://git.kernel.org/stable/c/222292930c8ecc3516e03ec1f9fa8448be7ff496	Patch
https://git.kernel.org/stable/c/258639bc55a586ee6df92d89786ccf1c71546d70	Patch
https://git.kernel.org/stable/c/3f94169affa33c9db4a439d88f09cb2ed3a33332	Patch
https://git.kernel.org/stable/c/4d6295b6d986476232332fffd08575b185f90d81	Patch
https://git.kernel.org/stable/c/5beb85ff7d005ddb7bf604a4f2dc76f01b84b318	Patch
https://git.kernel.org/stable/c/9d92291698e5cc35a2b8a1106a01ddd7d60ade2d	Patch

URL

CVE-2022-49525 | media: cx25821: Fix the warning when removing the module

Exploit prediction scoring system (EPSS) score for CVE-2022-49525

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49525

Weakness enumeration for CVE-2022-49525

OS Trackers for CVE-2022-49525

Affected software / configurations for CVE-2022-49525

References for CVE-2022-49525